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