n80
1,2,3,4,5,6,7,8;
0,9,10,11,12,13,14,15;
0,3,6,9,16,17,18,19;
0,2,6,10,20,21,22,23;
0,11,16,20,24,25,26,27;
0,12,17,21,24,28,29,30;
0,2,3,13,25,28,31,32;
0,14,18,22,26,29,31,33;
0,15,19,23,27,30,32,33;
1,2,11,13,20,34,35,36;
1,3,16,24,28,34,46,48;
1,4,9,13,17,28,41,42;
1,5,16,17,20,21,47,49;
1,6,9,11,21,24,43,44;
1,7,35,41,43,45,46,47;
1,8,36,42,44,45,48,49;
2,4,10,12,28,34,56,57;
2,5,11,12,21,25,53,54;
2,7,22,31,35,53,55,56;
2,8,23,32,36,54,55,57;
3,4,9,12,24,25,51,52;
3,5,12,13,17,34,37,38;
3,7,18,31,37,46,50,51;
3,8,19,32,38,48,50,52;
4,5,10,13,20,25,58,59;
4,6,17,20,24,34,39,40;
4,7,39,41,51,56,58,60;
4,8,40,42,52,57,59,60;
5,6,10,11,16,34,61,62;
5,7,37,47,53,58,61,63;
5,8,38,49,54,59,62,63;
6,7,18,22,39,43,61,64;
6,8,19,23,40,44,62,64;
7,8,45,50,55,60,63,64;
9,10,16,21,25,28,65,66;
9,14,18,41,43,51,65,73;
9,15,19,42,44,52,66,73;
21,22,29,43,47,53,65,74;
21,23,30,44,49,54,66,74;
25,26,31,51,53,58,65,75;
25,27,32,52,54,59,66,75;
11,14,26,35,43,53,61,76;
11,15,27,36,44,54,62,76;
13,14,31,35,37,41,58,71;
13,15,32,36,38,42,59,71;
14,15,33,70,71,73,76,77;
10,14,22,56,58,61,65,70;
12,14,29,37,51,53,56,77;
10,15,23,57,59,62,66,70;
12,15,30,38,52,54,57,77;
22,23,33,55,64,70,72,74;
20,22,26,35,39,47,58,72;
20,23,27,36,40,49,59,72;
17,18,29,37,39,41,47,68;
17,19,30,38,40,42,49,68;
18,19,33,50,64,67,68,73;
16,18,26,46,47,61,65,67;
16,19,27,48,49,62,66,67;
24,26,29,39,43,46,51,78;
24,27,30,40,44,48,52,78;
26,27,33,67,72,75,76,78;
28,29,31,41,46,56,65,69;
28,30,32,42,48,57,66,69;
29,30,33,68,69,74,77,78;
31,32,33,50,55,69,71,75;
34,35,37,39,46,56,61,79;
34,36,38,40,48,57,62,79;
55,56,57,60,69,70,77,79;
53,54,55,63,74,75,76,77;
61,62,63,64,67,70,76,79;
45,46,48,50,67,69,78,79;
43,44,45,64,73,74,76,78;
50,51,52,60,73,75,77,78;
35,36,45,55,71,72,76,79;
37,38,50,63,68,71,77,79;
39,40,60,64,68,72,78,79;
41,42,45,60,68,69,71,73;
45,47,49,63,67,68,72,74;
58,59,60,63,70,71,72,75;
65,66,67,69,70,73,74,75.