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