n42 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; 1,2,23,26,33,37,38,39; 1,3,13,14,29,30,35,39; 1,4,16,21,23,31,35,41; 1,5,16,17,25,30,36,38; 1,6,10,14,24,31,33,36; 1,7,10,13,17,21,26,28; 1,8,24,25,28,29,37,41; 2,3,11,12,29,32,37,40; 2,4,12,14,19,20,33,35; 2,5,23,24,27,29,35,36; 2,6,17,20,22,26,36,40; 2,7,17,19,27,32,34,38; 2,8,11,14,22,24,34,39; 3,4,19,21,28,30,37,38; 3,5,9,11,18,27,38,39; 3,6,13,15,18,21,31,40; 3,7,12,15,27,28,35,41; 3,8,9,14,19,31,32,41; 4,5,18,20,23,25,37,40; 4,6,14,15,22,25,30,41; 4,7,10,15,16,18,33,38; 4,8,10,12,22,28,31,40; 5,6,11,13,24,26,30,37; 5,7,16,20,26,34,35,39; 5,8,9,13,17,29,34,40; 6,7,20,21,32,33,37,41; 6,8,10,11,17,18,25,32; 7,8,12,13,18,19,37,39; 9,15,16,22,27,31,34,36; 9,12,20,22,23,29,39,41; 9,10,21,23,32,36,38,40; 16,19,24,27,30,33,39,41; 11,15,25,26,28,34,38,40.