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