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" 55". 1 , 20-24 .

1


20 ()


"" -"" 12-2(6-1)
:(4), (2), (2), , , , - , .

:("")- .

"" -" -17" 11-6(6-2)
:(4), (3), (2), , -

(3), (2), .
:(" -17")- .



21 ()


"" - 8-4 (4-3)
:(4), (2), , -
, , , .
:( "") - .


22 ()

"" - "" 6-2(4-2)
:(2), , , , -

, .

24 ()

"" - "" 1-5(0-3)
: - (2), (2), .


320