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2. .

, ( ) ; . ,

. , .

, ,

(12.14) . (12.14) . , , (12.14) . , , ; . ,

, (12.14) :

, (12.15) (12.14), , (12.15), , (12.14). , , ,

, ( , , (12.14).

, (12.14), (12.15).

, , . , , (12.14) (12.15) .

.

12.9. , (12.14) (12.15) .

. (12.14) , , ,

1. (12.15) :

2. (12.14) (12.15) .

, .

.

.

, (12.14) , ,

(. . 1 3, (12.7)).

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