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