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