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