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