n42
1,2,3,4,5,6,7,8;
0,9,10,11,12,13,14,15;
0,6,8,9,16,17,18,19;
0,5,6,10,20,21,22,23;
0,11,16,20,24,25,26,27;
0,3,8,12,21,24,28,29;
0,2,3,13,17,22,25,30;
0,14,18,23,26,28,30,31;
0,2,5,15,19,27,29,31;
1,2,12,15,17,18,28,32;
1,3,16,17,20,21,35,36;
1,4,12,14,21,23,33,41;
1,5,9,11,16,23,31,32;
1,6,18,20,27,31,37,41;
1,7,11,15,27,33,36,39;
1,8,9,14,28,35,37,39;
2,4,10,12,22,29,34,40;
2,6,9,10,24,25,28,31;
2,7,9,13,19,32,39,40;
2,8,18,24,27,30,34,39;
3,4,10,13,23,28,32,35;
3,5,10,11,25,29,36,38;
3,6,16,23,24,30,38,41;
3,7,11,12,20,22,32,41;
4,5,17,19,22,32,33,36;
4,6,17,21,28,30,34,37;
4,7,35,36,37,38,40,41;
4,8,13,14,19,29,30,38;
5,7,9,15,17,20,25,37;
5,8,16,21,27,33,37,38;
6,7,19,22,25,27,34,38;
7,8,12,13,17,33,34,35;
9,12,18,20,23,24,35,40;
11,14,24,29,31,39,40,41;
16,19,25,30,31,36,37,39;
10,15,20,26,31,32,36,40;
10,14,21,24,26,34,35,38;
13,15,25,26,28,29,34,39;
21,22,26,27,29,30,36,41;
14,15,18,19,33,34,37,40;
16,18,26,32,33,35,39,41;
11,13,22,23,26,33,38,40.