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