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17.5.

, , , .

.

. , .

, .

. (17.17) (17.15), (17.16).

, X .

. (. 17.13), 18,

18,

.

, (17.18):

. 17.13

,

. , , . .

, , . .

, , , , , . .

,

, .

.

. , . : (17.15), (17.16), (17.17), . 5%, , . 5%, , .

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