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