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