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1. : : ,, : : 1 , . , . 4- . - : 1. 2. 3. 4. 5. 6. 7. 8., 2.
3. 1- . . - 2 1 . 2 , .2- . . - . 10 30 . 3- . . -. 15 . 4- . . - . - - - -