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