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