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12.4. ...

, ().

. .

. 12.3, .

( ), (12.10).

. 12.3 (12.11), , . . :

).

. . ; ,

( ).

"" , . , (12.13):

.

, , (12.2). ,

.

(12.4) (12.22) (12.23) . , , .

, [. (12.14)],

,

.

, (12.16) (12.18) 2 .

12 .

1. 12, (12.16)], . .

2.

, , , , , .

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