n64
1,2,3,4,5,6,7,8;
0,2,7,9,10,11,12,13;
0,1,7,14,15,16,17,18;
0,9,14,19,20,21,22,23;
0,10,15,19,24,25,26,27;
0,11,16,20,24,28,29,30;
0,12,17,21,25,28,31,32;
0,1,2,22,26,29,31,33;
0,13,18,23,27,30,32,33;
1,3,14,22,34,38,39,40;
1,4,15,26,34,42,46,56;
1,5,16,29,35,39,46,55;
1,6,17,31,35,38,42,57;
1,8,18,33,40,55,56,57;
2,3,9,22,35,42,46,52;
2,4,10,26,35,38,39,41;
2,5,11,29,34,38,42,54;
2,6,12,31,34,39,46,53;
2,8,13,33,41,52,53,54;
3,4,28,29,31,39,42,43;
3,5,25,26,31,38,46,49;
3,6,24,26,29,34,35,36;
3,7,9,14,24,25,28,50;
3,8,36,40,43,49,50,52;
4,5,21,22,31,34,35,37;
4,6,20,22,29,38,46,47;
4,7,10,15,20,21,28,45;
4,8,37,41,43,45,47,56;
5,6,19,22,26,39,42,44;
5,7,11,16,19,21,25,51;
5,8,37,44,49,51,54,55;
6,7,12,17,19,20,24,48;
6,8,36,44,47,48,53,57;
7,8,13,18,45,48,50,51;
9,10,16,17,21,24,35,58;
11,12,14,15,21,24,34,59;
21,23,32,37,45,51,58,59;
24,27,30,36,48,50,58,59;
9,12,15,16,20,25,46,60;
9,11,15,17,19,28,42,61;
9,13,23,50,52,58,60,61;
15,18,27,45,56,59,60,61;
10,12,14,16,19,28,39,62;
19,23,27,44,48,51,61,62;
28,30,32,43,45,50,61,62;
26,27,33,36,41,44,49,56;
10,11,14,17,20,25,38,63;
25,27,32,49,50,51,60,63;
31,32,33,37,43,49,53,57;
20,23,30,45,47,48,60,63;
22,23,33,37,40,44,47,52;
29,30,33,36,43,47,54,55;
14,18,23,40,50,59,62,63;
17,18,32,48,57,58,61,63;
16,18,30,51,55,58,60,62;
11,13,30,51,54,59,61,63;
10,13,27,41,45,58,62,63;
12,13,32,48,53,59,60,62;
34,36,37,40,53,54,56,59;
35,36,37,41,52,55,57,58;
38,40,41,47,49,54,57,63;
39,40,41,43,44,53,55,62;
42,43,44,52,54,56,57,61;
46,47,49,52,53,55,56,60.