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