[(4, 1), (6, 2), (7, 2), (10, 3), (2, 3), (9, 3), (1, 3), (5, 3), (8, 3), (8, 4), (2, 5), (8, 5), (8, 6), (7, 6), (5, 9), (1, 9), (6, 9), (5, 10), (9, 10), (7, 10)]
4 6 7 10 2 9 1 5 8 8 2 8 8 7 5 1 6 5 9 7 1 2 2 3 3 3 3 3 3 4 5 5 6 6 9 9 9 10 10 10