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