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