n56 1,2,3,4,5,6,7,8; 0,3,8,9,10,11,12,13; 0,9,14,15,16,17,18,19; 0,1,8,14,20,21,22,23; 0,10,15,20,24,25,26,27; 0,11,16,21,24,28,29,30; 0,12,17,22,25,28,31,32; 0,13,18,23,26,29,31,33; 0,1,3,19,27,30,32,33; 1,2,14,19,34,35,36,37; 1,4,22,32,34,43,48,49; 1,5,20,27,35,38,48,50; 1,6,23,33,36,38,49,51; 1,7,21,30,37,43,50,51; 2,3,9,19,39,40,41,42; 2,4,31,32,33,36,42,44; 2,5,25,27,32,34,40,45; 2,6,29,30,33,37,39,45; 2,7,24,27,30,35,41,44; 2,8,9,14,24,25,29,31; 3,4,11,30,39,44,49,51; 3,5,13,33,42,45,48,49; 3,6,10,27,41,45,50,51; 3,7,12,32,40,44,48,50; 4,5,18,19,33,34,38,39; 4,6,16,19,30,36,41,43; 4,7,38,41,42,46,48,51; 4,8,11,16,18,22,31,46; 5,6,39,40,43,47,49,50; 5,7,17,19,32,35,42,43; 5,8,13,17,18,20,25,47; 6,7,15,19,27,37,38,40; 6,8,10,15,16,23,29,47; 7,8,12,15,17,21,24,46; 9,10,16,24,41,46,52,53; 9,11,18,29,39,47,52,54; 9,12,15,25,40,47,53,55; 9,13,17,31,42,46,54,55; 11,12,24,26,31,44,52,55; 14,17,20,24,28,35,53,55; 14,16,23,28,31,36,52,54; 14,18,22,25,26,34,54,55; 14,15,21,26,29,37,52,53; 10,13,25,28,29,45,53,54; 15,18,20,23,38,46,52,55; 16,17,21,22,43,47,53,54; 26,27,33,34,37,44,48,51; 28,30,32,35,36,45,49,50; 10,11,21,23,26,46,51,54; 10,12,20,21,28,47,50,52; 11,13,22,23,28,47,49,55; 12,13,20,22,26,46,48,53; 34,35,38,40,42,44,49,55; 34,36,39,42,43,45,51,54; 35,37,40,41,43,45,48,53; 36,37,38,39,41,44,50,52.