n40
1,2,3,4,5,6,7,8;
0,6,8,9,10,11,12,13;
0,5,6,14,15,16,17,18;
0,7,8,14,19,20,21,22;
0,5,7,9,23,24,25,26;
0,2,4,10,15,19,23,27;
0,1,2,11,16,20,24,28;
0,3,4,12,17,21,25,28;
0,1,3,13,18,22,26,27;
1,4,16,18,19,21,32,33;
1,5,14,22,24,29,31,33;
1,6,13,14,20,32,34,36;
1,7,21,26,28,29,34,35;
1,8,11,19,27,31,35,36;
2,3,10,11,25,26,35,37;
2,5,16,26,27,33,34,36;
2,6,9,15,24,31,36,37;
2,7,19,25,28,30,31,33;
2,8,9,20,23,30,34,35;
3,5,9,13,17,29,34,37;
3,6,11,18,28,29,31,32;
3,7,9,12,22,31,35,38;
3,8,10,21,27,32,34,38;
4,5,18,25,27,31,37,38;
4,6,10,16,28,30,34,37;
4,7,14,17,23,33,34,38;
4,8,12,14,15,30,31,32;
5,8,13,15,22,23,36,38;
6,7,12,17,20,24,29,30;
10,12,19,20,28,32,35,39;
17,18,24,26,28,33,37,39;
10,13,16,17,20,21,23,26;
9,11,20,22,26,29,36,39;
9,10,15,17,25,30,38,39;
11,12,15,18,19,22,24,25;
12,13,14,18,21,29,38,39;
11,13,15,16,27,32,37,39;
14,16,19,23,24,30,36,39;
21,22,23,25,27,33,35,39;
29,30,32,33,35,36,37,38.