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