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