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