n56
1,2,3,4,5,6,7;
0,8,9,10,11,12,13;
0,8,14,15,16,17,18;
0,9,14,19,20,21,22;
0,10,15,19,23,24,25;
0,11,16,20,23,26,27;
0,12,17,21,24,26,28;
0,13,18,22,25,27,28;
1,2,29,30,31,32,33;
1,3,29,34,35,36,37;
1,4,30,34,38,39,40;
1,5,31,35,38,41,42;
1,6,32,36,39,41,43;
1,7,33,37,40,42,43;
2,3,31,36,41,44,45;
2,4,32,34,36,46,47;
2,5,33,41,43,46,48;
2,6,30,34,37,43,44;
2,7,29,37,45,47,48;
3,4,35,38,45,46,48;
3,5,34,40,42,44,46;
3,6,37,41,42,48,49;
3,7,29,31,38,40,49;
4,5,29,33,35,40,47;
4,6,29,30,36,45,49;
4,7,32,33,39,48,49;
5,6,29,32,34,38,48;
5,7,31,32,43,44,47;
6,7,38,39,42,44,45;
8,9,18,22,23,24,26;
8,10,17,24,50,51,52;
8,11,14,22,27,50,53;
8,12,15,25,26,27,51;
8,13,16,23,25,52,53;
9,10,15,17,20,26,54;
9,11,19,23,50,52,54;
9,12,14,15,24,50,55;
9,13,17,18,21,52,55;
10,11,19,22,26,28,51;
10,12,25,28,52,54,55;
10,13,20,22,23,50,55;
11,12,14,16,21,51,52;
11,13,20,21,28,53,54;
12,13,16,17,27,50,54;
14,17,20,27,28,51,55;
14,18,19,24,28,52,53;
15,16,19,20,50,51,53;
15,18,23,27,53,54,55;
16,18,19,21,25,26,54;
21,22,24,25,51,53,55;
30,31,35,36,40,43,46;
30,32,38,41,44,46,49;
30,33,35,37,39,41,45;
31,33,42,45,46,47,49;
34,35,39,42,43,47,48;
36,37,39,40,44,47,49.