n40 1,2,3,4,5,6,7,8; 0,9,10,11,12,13,14,15; 0,9,16,17,18,19,20,21; 0,4,5,10,16,22,23,24; 0,3,5,11,17,25,26,27; 0,3,4,12,18,28,29,30; 0,13,19,22,25,28,31,32; 0,14,20,23,26,29,31,33; 0,15,21,24,27,30,32,33; 1,2,19,21,22,24,34,35; 1,3,11,14,16,20,22,28; 1,4,10,14,29,34,36,38; 1,5,13,15,16,21,25,38; 1,6,12,15,19,20,29,32; 1,7,10,11,24,25,32,39; 1,8,12,13,28,35,36,39; 2,3,10,12,22,27,32,36; 2,4,23,26,27,30,34,37; 2,5,24,26,33,36,38,39; 2,6,9,13,21,32,37,39; 2,7,10,13,23,31,35,38; 2,8,9,12,19,30,31,33; 3,6,9,10,16,25,29,31; 3,7,17,20,30,31,32,37; 3,8,9,14,18,26,36,37; 4,6,12,14,22,31,35,37; 4,7,17,18,24,27,35,36; 4,8,16,17,26,28,31,38; 5,6,10,15,27,34,35,39; 5,7,11,13,22,34,36,37; 5,8,17,21,23,33,35,37; 6,7,20,21,22,23,25,27; 6,8,13,14,16,19,23,34; 7,8,18,21,30,34,38,39; 9,11,17,28,29,32,33,36; 9,15,20,25,26,28,30,39; 11,15,16,18,24,26,29,34; 17,19,23,24,25,29,30,38; 11,12,18,20,27,33,37,39; 14,15,18,19,28,33,35,38.