n74 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; 1,3,37,45,52,58,60,64; 1,4,38,45,48,49,50,51; 1,5,39,48,55,57,58,59; 1,6,40,49,54,57,61,64; 1,7,41,51,54,59,60,62; 1,8,42,50,52,55,61,62; 2,3,37,43,47,54,61,62; 2,4,38,46,52,56,61,64; 2,5,41,44,53,54,56,57; 2,6,39,44,46,47,48,49; 2,7,42,45,48,57,62,64; 2,8,40,43,45,49,52,53; 3,4,44,47,51,56,58,59; 3,5,38,40,51,52,54,55; 3,6,46,55,59,62,63,64; 3,7,38,41,43,44,45,46; 3,8,40,41,56,60,61,63; 4,5,37,42,47,48,52,53; 4,6,37,39,50,59,60,61; 4,7,44,49,53,60,63,64; 4,8,39,42,45,46,58,63; 5,6,37,40,43,44,58,63; 5,7,38,42,50,56,59,63; 5,8,39,41,43,47,50,51; 6,7,43,48,50,53,54,55; 6,8,47,53,57,58,60,62; 7,8,46,49,51,55,56,57; 9,10,16,27,28,31,65,66; 9,11,17,23,25,32,65,67; 9,12,19,28,30,33,67,68; 9,13,21,23,26,31,68,69; 9,14,18,25,26,33,66,70; 9,15,20,27,30,32,69,70; 16,21,25,31,33,34,67,71; 18,19,22,25,29,31,65,68; 10,11,20,21,25,30,66,68; 17,19,24,25,30,36,70,71; 16,19,22,27,33,35,70,72; 11,12,19,20,27,34,65,71; 11,13,19,21,29,36,67,72; 11,15,28,32,33,34,66,72; 11,14,22,23,33,36,68,71; 10,15,17,21,23,27,71,72; 18,21,27,29,34,35,66,69; 13,14,16,18,23,34,65,72; 12,15,23,24,34,36,67,69; 17,18,22,26,32,36,69,72; 12,13,18,20,35,36,68,70; 10,12,22,30,31,35,69,71; 12,14,22,24,28,32,65,70; 10,14,26,28,29,35,68,72; 13,15,16,17,26,28,67,70; 14,15,16,20,24,35,66,71; 24,26,29,30,31,32,66,67; 10,13,17,20,24,29,65,69; 37,38,44,48,54,59,64,73; 37,41,45,50,53,62,63,73; 38,39,43,49,55,61,63,73; 39,40,44,45,51,57,60,73; 40,42,53,55,56,58,64,73; 41,42,46,47,57,59,61,73; 43,46,48,51,52,58,62,73; 47,49,50,52,54,56,60,73; 65,66,67,68,69,70,71,72.