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