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