0-1, 0-2, 1-2, 1-3, 2-3, 3-3, 3-4, 3-5, 3-6, 4-6, 4-7, 5-7, 5-8, 6-8, 6-9, 6-10, 6-11, 6-12, 7-12, 8-12, 9-12, 10-12, 11-12, 12-12, 12-13, 13-13, 14-13, 15-13, 16-13, 16-14, 16-15, 16-16, 17-16, 18-16, 19-16, 20-16, 21-16, 22-16.
0-1, 0-2, 1-2, 1-3, 2-3, 3-3, 3-4, 3-5, 3-6, 4-6, 4-7, 5-7, 5-8, 6-8, 6-9, 6-10, 6-11, 6-12, 7-12, 8-12, 9-12, 10-12, 11-12, 12-12, 12-13, 13-13, 14-13, 15-13, 16-13, 16-14, 16-15, 16-16, 17-16, 18-16, 19-16, 20-16, 21-16, 22-16.