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