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