. , , . , , . , . . , , . , , , , . , , . .
-10-15, -5-10, -15-20, .
- -3-8, -1-6, 0 - -5, 0 - +5. . -3 - +2, +1-6, -2-7, 0 - -5, -14-19, -6-11, -8-13, -1-6.
+7-12, - 0.
0 - +2 ( -3 - +2), +2-4 ( 0 - +5), - - . 0 - -2 ( 0 - -5), 0 ( -3 - +2). -6-8 ( -6-11, ), -2-4 ( -1-6).