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