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