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23.

:

. 4- k

(23.1)

(23.2)

, (23.7) ,

(23.3) (23.4). , (23.6)

(23.5)

-, (23.9) (23.10)

, , .

, . (21.5) (23.7) :

, [ (23.8)]:

.

(23.11).

(21.3), ,

, (21.2), . , .

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