n84
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;
1,3,42,51,54,65,67,68;
1,4,38,49,61,64,67,69;
1,5,39,51,55,58,61,62;
1,6,40,50,60,62,68,69;
1,7,41,45,58,60,64,65;
1,8,37,45,49,50,54,55;
2,3,37,46,47,51,55,57;
2,4,39,51,52,59,68,69;
2,5,38,47,52,58,64,66;
2,6,41,46,53,64,69,70;
2,7,40,50,53,55,58,59;
2,8,42,50,57,66,68,70;
3,4,37,38,44,52,54,56;
3,5,38,42,48,57,61,63;
3,6,43,47,52,63,68,70;
3,7,43,49,55,56,61,65;
3,8,44,46,48,49,67,70;
4,5,37,39,43,47,48,49;
4,6,45,47,51,54,62,64;
4,7,44,48,59,60,61,62;
4,8,43,45,56,60,67,68;
5,6,37,42,50,51,52,53;
5,7,46,49,50,57,62,64;
5,8,43,46,53,55,63,66;
6,7,37,40,43,44,45,46;
6,8,41,42,44,54,60,63;
7,8,37,41,48,53,56,57;
9,15,16,22,27,31,34,36;
9,11,18,22,23,71,72,73;
9,12,17,27,71,74,75,76;
9,13,20,34,72,74,77,78;
9,14,19,35,36,73,75,77;
9,10,21,23,31,35,76,78;
24,25,27,30,33,34,76,78;
22,26,29,34,35,72,75,76;
14,15,28,30,34,74,75,79;
16,19,26,32,33,34,77,79;
16,18,24,27,28,73,74,77;
23,26,27,29,36,71,77,78;
11,15,25,26,27,32,73,75;
13,15,20,21,31,32,79,80;
10,12,16,17,28,31,79,81;
17,18,22,24,31,76,80,82;
19,20,31,33,36,78,81,82;
10,15,22,28,35,73,80,83;
12,15,16,20,25,33,74,83;
22,25,30,36,71,75,82,83;
16,21,23,32,36,73,81,83;
12,14,18,20,71,77,79,82;
17,20,29,71,72,80,81,83;
13,14,29,30,35,78,80,82;
11,12,23,25,29,76,81,82;
12,13,28,29,32,75,77,83;
23,24,33,35,72,77,82,83;
11,14,18,19,28,32,80,81;
10,14,25,71,73,74,78,81;
18,21,33,72,74,76,79,81;
10,11,26,30,71,76,79,80;
10,13,17,21,24,30,74,83;
11,13,17,19,72,75,79,82;
19,21,24,26,72,73,78,80;
38,39,48,56,58,59,65,67;
38,40,44,59,63,66,69,70;
38,41,47,49,54,57,65,70;
39,40,45,47,55,65,66,68;
39,41,44,45,49,56,62,69;
39,42,43,44,52,61,66,67;
40,41,46,47,48,58,62,63;
40,42,43,48,53,60,65,70;
45,46,50,51,58,66,67,69;
50,52,54,59,60,64,67,70;
51,53,57,59,61,64,65,66;
52,53,56,58,60,61,63,69;
54,55,56,57,59,62,63,68.