n52
1,2,3,4,5,6,7,8;
0,2,4,9,10,11,12,13;
0,1,4,14,15,16,17,18;
0,9,14,19,20,21,22,23;
0,1,2,19,24,25,26,27;
0,10,15,20,24,28,29,30;
0,11,16,21,25,28,31,32;
0,12,17,22,26,29,31,33;
0,13,18,23,27,30,32,33;
1,3,15,26,29,34,45,46;
1,5,18,27,34,40,41,42;
1,6,14,22,24,29,41,47;
1,7,17,21,22,25,42,46;
1,8,16,19,21,40,45,47;
2,3,11,26,31,36,49,50;
2,5,9,22,25,31,41,48;
2,6,13,27,36,41,43,44;
2,7,12,20,22,24,44,50;
2,8,10,19,20,43,48,49;
3,4,13,18,34,36,38,39;
3,5,17,18,31,32,46,51;
3,6,12,13,29,30,50,51;
3,7,11,12,15,17,28,38;
3,8,28,30,32,39,45,49;
4,5,11,17,25,26,34,35;
4,6,12,15,24,26,36,37;
4,7,9,14,24,25,28,39;
4,8,10,16,28,35,37,38;
5,6,22,23,26,27,46,50;
5,7,9,11,21,40,50,51;
5,8,21,23,32,35,42,48;
6,7,14,15,20,43,46,51;
6,8,20,23,30,37,44,47;
7,8,38,39,40,42,43,44;
9,10,19,24,37,40,41,44;
24,27,30,36,39,40,47,50;
14,16,19,25,35,41,42,43;
25,27,32,34,39,43,46,48;
19,22,27,33,42,44,47,48;
19,23,26,33,35,37,45,49;
10,13,29,33,34,35,41,48;
10,11,15,16,34,36,40,43;
10,12,30,33,36,38,44,49;
16,18,31,33,36,37,41,47;
16,17,32,33,34,38,42,45;
9,13,23,39,44,48,49,50;
9,12,20,28,31,37,49,51;
11,13,32,35,38,43,49,51;
15,18,30,37,38,40,45,51;
14,18,23,39,42,45,46,47;
14,17,21,28,29,35,45,51;
20,21,29,31,46,47,48,50.