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