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_________ _________ _________ _________, _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ (Figure 1.2 a). _________- _________ "_________," _________, _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________- _________ "_________," _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (Figure 1.2 b). _________ _________ _________ _________, _________ _________ _________ _________ _________ _________, _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________: _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________, _________, _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
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_________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________, _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________, _________ _________. _________ _________ _________ _________ _________ _________ _________ (_________, _________ _________, _________ _________ _________ _________ _________ _________ _________) _________ _________ _________ _________ (_________ _________ _________ _________ _________ _________ _________ _________ _________ _________).
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________, _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
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_________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________: _________ _________, _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________, _________, _________, _________, _________, _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________) _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________, _________, _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________, _________ _________, _________ _________ _________ _________. _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________, _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________ _________ _________ _________ _________ _________ _________ _________) _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (Figure 1.4 and Figure 1.5). _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ "_________" _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________.
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_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________: _________, _________, _________, _________, _________, _________ _________.
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_________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________) _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________: _________ _________ _________.
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_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________, _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (Figure 1.6). _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ (_________), _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ (_________) _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ (_________) _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
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_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________, _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________ _________ _________ _________ _________ _________ Figure 1.7), and _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
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_________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (Figure 1.8) _________ _________. _________ _________ _________ _________ _________ _________ _________ _________, _________ _________, _________. _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________, _________ _________. _________ _________ (_________ _________ _________ _________ _________ _________ _________) _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________.
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_________ _________ _________ _________ _________ _________ (_________) _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ "_________ _________," _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ (_________ _________ _________), _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________, _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________, _________ _________ _________ _________ _________ (_________ _________) _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________, _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ (_________ _________ _________, _________ _________) _________ _________ _________ _________ _________ _________ _________.
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_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________). _________ _________ _________ _________ _________. _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________).
_________ _________ _________ (_________ _________ _________ _________ _________) _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________ _________ _________ _________ _________). _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________ _________). _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________, _________ _________ (Figure 1.17).
_________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________; _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________; _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________; _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________, _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________, _________, _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________, _________, _________ _________ _________ _________, _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________, _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________; _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ (_________) _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ "_________" _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________: _________ "_________" _________ (_________ _________ _________ _________ _________ _________) _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________, _________ _________ _________, _________ _________ _________ _________, _________ _________ _________ "_________." _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (Figure 1.18). _________ _________ _________ _________ _________ _________ _________, _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ "_________" _________ _________ _________, _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________. _________ _________ (_________) _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (Figure 1.19a). _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________) _________ _________ _________ _________ _________ _________ _________, _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ "_________."
_________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ (_________) _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________) _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________ Figure 1.19b), _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________, _________ _________ _________, _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ "_________" _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ (_________ _________, _________ _________ _________, _________ _________ _________) _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ (_________), _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
_________ _________ _________ (_________) _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ (_________ Figure 1.19c) _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________, _________ _________ _________ _________, _________ _________ _________ _________, _________ _________, _________ _________, _________ _________ _________.
_________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ (_________ Figure 1.19d). _________ _________ _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________ _________, _________ _________ _________ _________ _________. _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________.
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