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