n80
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;
1,3,37,45,48,51,53,54;
1,4,38,43,45,55,59,60;
1,5,39,43,48,50,56,62;
1,6,40,51,59,61,62,63;
1,7,41,50,53,55,63,66;
1,8,42,54,56,60,61,66;
2,3,37,44,47,64,67,68;
2,4,40,55,57,63,64,65;
2,5,38,44,56,59,63,66;
2,6,39,43,46,59,65,67;
2,7,42,46,52,57,66,68;
2,8,41,43,47,52,55,56;
3,4,44,46,48,57,59,62;
3,5,46,50,54,58,66,67;
3,6,49,50,53,62,64,65;
3,7,45,47,49,55,57,58;
3,8,51,55,59,65,66,68;
4,5,37,38,54,61,62,64;
4,6,37,40,43,47,48,49;
4,7,44,47,52,60,61,63;
4,8,45,46,49,52,54,65;
5,6,39,41,47,58,63,64;
5,7,37,41,43,44,45,46;
5,8,45,47,48,59,61,67;
6,7,37,42,53,58,61,67;
6,8,41,42,46,48,50,51;
7,8,43,49,50,60,67,68;
9,10,16,27,28,32,34,69;
9,11,18,27,70,71,72,73;
9,12,19,31,69,70,74,75;
9,13,17,28,71,74,76,77;
9,14,21,31,32,35,72,76;
9,15,20,34,35,73,75,77;
11,12,19,21,28,32,36,71;
16,18,22,29,32,71,76,78;
10,11,25,30,32,33,72,78;
19,20,22,23,30,32,35,69;
16,21,25,28,29,31,33,74;
10,12,22,28,33,35,75,76;
24,25,28,30,36,69,75,77;
12,14,23,24,35,36,70,73;
10,13,26,35,69,70,72,77;
20,21,29,30,71,72,77,79;
10,14,24,34,76,77,78,79;
10,15,23,27,30,70,75,79;
11,14,17,21,25,26,73,77;
12,15,18,21,73,74,76,79;
17,20,22,25,74,75,78,79;
23,25,31,34,69,72,73,79;
11,13,18,19,22,26,33,74;
11,15,29,36,70,74,77,78;
13,15,27,29,33,34,72,76;
12,13,22,24,27,69,71,79;
13,14,17,18,29,31,70,79;
16,17,24,27,31,73,75,76;
17,19,24,26,30,70,71,78;
14,15,18,20,23,26,72,78;
16,19,23,33,34,36,75,78;
16,20,26,36,69,71,73,74;
37,39,46,49,51,58,62,68;
38,39,50,51,54,60,63,65;
38,40,43,44,52,62,65,68;
38,41,45,51,52,58,61,66;
38,42,50,55,56,58,64,68;
39,40,47,56,57,59,60,68;
39,42,48,49,54,57,64,67;
40,41,44,48,53,56,61,64;
40,42,49,51,52,53,55,60;
44,45,53,57,60,65,66,67;
52,53,54,56,57,58,62,63.