n48
1,2,3,4,5,6,7;
0,4,5,8,9,10,11;
0,8,12,13,14,15,16;
0,9,12,17,18,19,20;
0,1,5,13,17,21,22;
0,1,4,14,18,23,24;
0,10,15,19,21,23,25;
0,11,16,20,22,24,25;
1,2,13,14,26,27,28;
1,3,17,18,26,29,30;
1,6,22,24,27,29,31;
1,7,21,23,28,30,31;
2,3,27,30,31,32,33;
2,4,8,14,32,34,35;
2,5,8,13,33,36,37;
2,6,28,31,34,36,38;
2,7,26,30,35,37,38;
3,4,9,18,32,39,40;
3,5,9,17,33,41,42;
3,6,26,27,38,39,41;
3,7,29,31,38,40,42;
4,6,11,24,34,39,43;
4,7,10,23,35,40,43;
5,6,11,22,36,41,44;
5,7,10,21,37,42,44;
6,7,26,28,29,43,44;
8,9,16,19,25,32,33;
8,10,12,19,35,37,45;
8,11,15,25,34,36,45;
9,10,20,25,40,42,45;
9,11,12,16,39,41,45;
10,11,12,15,20,43,44;
12,13,17,26,37,41,44;
12,14,18,26,35,39,43;
13,15,21,28,36,44,46;
13,16,22,27,33,41,46;
14,15,23,28,34,43,47;
14,16,24,27,32,39,47;
15,16,19,20,45,46,47;
17,19,21,30,33,37,46;
17,20,22,29,42,44,46;
18,19,23,30,32,35,47;
18,20,24,29,40,43,47;
21,22,25,31,33,36,42;
23,24,25,31,32,34,40;
27,28,29,30,38,46,47;
34,35,38,39,40,45,47;
36,37,38,41,42,45,46.