n16
1,2,3,4,5,6;
0,2,3,7,8,9;
0,1,3,10,11,12;
0,1,2,13,14,15;
0,5,6,7,10,13;
0,4,6,8,11,14;
0,4,5,9,12,15;
1,4,8,9,10,13;
1,5,7,9,11,14;
1,6,7,8,12,15;
2,4,7,11,12,13;
2,5,8,10,12,14;
2,6,9,10,11,15;
3,4,7,10,14,15;
3,5,8,11,13,15;
3,6,9,12,13,14.