ряд чисел
9,7,8,6,7,5,6,..........
8,5,7,4,6,.........
3,7,4,8.5,.......
3,6,2,5,.......
9,6,8,5,7,........

...5,3,4,2,3,1,2,0
....5,9,6,10,7,11,8,12,9,13,10,14

9,7,8,6,7,5,6,4,5,3,4,2,3
8,5,7,4,6,3,5,2,4,1,3
3,7,4,8,5,9,6,10,7,11,8
3,6,2,5,8,4,7,3,6,2
9,6,8,5,7,4,6,3,5,2,4