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