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2. .

1.

,

(8.12).

(8.13)

, (8.13) (8.14).

( ).

.

8.1. (8.14) (8.13)

. , :

,

(8.15) ( ). (8.15), , ( (8.15) , ). .

1.

(8.16) (8.15).

2. ,

.

(8.17) (8.15) .

8.2. :

.

. (8.17) ,

, , (8.18), . (8.19) (. 3.13 . 1), (8.18). .

(8.10) ( ).

,

, (8.20), (8.21), : (8.20)

(8.21)

. (8.21) , ( ( (8.21)).

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