n72
1,2,3,4,5,6,7,8;
0,9,10,11,12,13,14,15;
0,9,16,17,18,19,20,21;
0,10,16,22,23,24,25,26;
0,11,17,22,27,28,29,30;
0,12,18,23,27,31,32,33;
0,13,19,24,28,31,34,35;
0,14,20,25,29,32,34,36;
0,15,21,26,30,33,35,36;
1,2,37,38,39,40,41,42;
1,3,37,46,50,52,55,56;
1,4,38,47,52,58,59,60;
1,5,39,45,46,49,60,61;
1,6,40,44,56,58,61,62;
1,7,41,44,49,53,55,59;
1,8,42,45,47,50,53,62;
2,3,38,49,51,55,60,63;
2,4,37,45,49,52,53,54;
2,5,40,43,47,54,60,62;
2,6,39,47,51,53,59,61;
2,7,41,45,61,62,63,64;
2,8,42,43,52,55,59,64;
3,4,37,42,43,47,48,51;
3,5,38,40,46,48,57,58;
3,6,41,42,50,58,59,63;
3,7,43,56,57,59,60,61;
3,8,40,41,47,49,52,61;
4,5,43,45,50,56,58,64;
4,6,38,42,53,55,56,57;
4,7,46,48,54,55,60,64;
4,8,46,49,50,51,57,59;
5,6,37,38,44,47,49,50;
5,7,37,39,48,53,56,62;
5,8,44,53,54,57,61,64;
6,7,39,40,49,54,57,63;
6,8,37,41,51,54,55,62;
7,8,37,40,43,44,45,46;
9,10,17,22,31,32,35,36;
9,11,16,23,28,31,65,66;
9,12,19,32,34,65,67,68;
9,13,18,23,26,34,36,69;
9,14,20,24,26,35,66,67;
9,15,21,22,24,28,68,69;
18,21,22,25,27,36,70,71;
13,14,31,33,36,65,67,70;
12,15,17,20,27,36,67,69;
10,12,23,29,30,36,65,71;
11,15,18,19,22,26,31,67;
22,23,29,32,66,67,69,70;
12,14,16,17,26,30,31,34;
10,15,24,27,30,31,66,70;
16,19,22,30,35,66,68,71;
10,11,17,21,26,66,69,71;
14,15,17,19,28,32,33,66;
17,18,29,33,34,35,67,71;
10,14,16,21,28,29,35,70;
10,13,25,27,28,32,65,69;
23,25,28,30,33,34,68,70;
11,13,23,24,27,67,68,71;
11,14,19,21,24,25,30,65;
11,12,16,18,25,29,68,69;
12,13,19,20,25,26,33,71;
13,15,18,20,32,35,68,70;
16,20,24,34,65,69,70,71;
20,21,27,29,33,65,66,68;
38,39,44,46,56,59,63,64;
38,41,48,50,51,52,53,64;
39,41,44,45,47,48,54,58;
39,42,51,57,58,60,62,64;
40,42,45,48,52,56,60,63;
43,44,48,50,55,57,62,63;
43,46,51,52,54,58,61,63.