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