n67
1,2,3,4;
0,5,6,7;
0,8,9,10;
0,11,12,13;
0,14,15,16;
1,17,18,19;
1,20,21,22;
1,23,24,25;
2,26,27,28;
2,29,30,31;
2,32,33,34;
3,35,36,37;
3,38,39,40;
3,41,42,43;
4,44,45,46;
4,47,48,49;
4,50,51,52;
5,33,37,57;
5,28,41,60;
5,30,38,48;
6,31,35,66;
6,32,42,52;
6,27,39,54;
7,29,43,61;
7,26,36,46;
7,34,40,63;
8,24,47,53;
8,22,43,45;
8,18,52,56;
9,23,49,59;
9,19,51,62;
9,20,46,57;
10,21,44,65;
10,17,50,55;
10,25,48,64;
11,20,48,56;
11,24,51,65;
11,17,45,59;
12,19,44,53;
12,22,49,55;
12,25,52,57;
13,18,46,64;
13,21,47,62;
13,23,27,50;
14,32,38,61;
14,27,37,63;
14,24,31,41;
15,26,42,58;
15,19,34,35;
15,29,39,65;
16,33,43,66;
16,30,36,54;
16,21,28,40;
26,38,59,66;
22,51,58,64;
33,39,56,62;
28,35,55,61;
17,31,40,58;
47,54,57,61;
29,37,53,64;
18,63,65,66;
23,44,56,58;
30,42,55,63;
25,45,60,62;
34,41,54,59;
32,36,49,60;
20,50,53,60.