1
1+0 1+1
1+4 1+5 1+6 1+7
10-1 10-2 10-3 10-4 10-5 10-6 10-7
10-8 10-9 10-0 9-1 9-3 9-4 9-5
9-6 9-7 9-8 8-1 8-2 8-3 8-4 8-5
8-6 8-7 7-1 7-2 7-3 7-4 7-5 7-6
6-1 6-2 6-3 6-4 6-5 6-6 6-7 5-1
5-2 5-3 5-4 4-1 4-1 4-2 4-3 3-2
3-1 2-1