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