There should have been 60 permutations as follows:
[(1, 2, 2, 3, 3, 3), (1, 2, 3, 2, 3, 3), (1, 2, 3, 3, 2, 3), (1, 2, 3, 3, 3, 2), (1, 3, 2, 2, 3, 3), (1, 3, 2, 3, 2, 3), (1, 3, 2, 3, 3, 2), (1, 3, 3, 2, 2, 3), (1, 3, 3, 2, 3, 2), (1, 3, 3, 3, 2, 2), (2, 1, 2, 3, 3, 3), (2, 1, 3, 2, 3, 3), (2, 1, 3, 3, 2, 3), (2, 1, 3, 3, 3, 2), (2, 2, 1, 3, 3, 3), (2, 2, 3, 1, 3, 3), (2, 2, 3, 3, 1, 3), (2, 2, 3, 3, 3, 1), (2, 3, 1, 2, 3, 3), (2, 3, 1, 3, 2, 3), (2, 3, 1, 3, 3, 2), (2, 3, 2, 1, 3, 3), (2, 3, 2, 3, 1, 3), (2, 3, 2, 3, 3, 1), (2, 3, 3, 1, 2, 3), (2, 3, 3, 1, 3, 2), (2, 3, 3, 2, 1, 3), (2, 3, 3, 2, 3, 1), (2, 3, 3, 3, 1, 2), (2, 3, 3, 3, 2, 1), (3, 1, 2, 2, 3, 3), (3, 1, 2, 3, 2, 3), (3, 1, 2, 3, 3, 2), (3, 1, 3, 2, 2, 3), (3, 1, 3, 2, 3, 2), (3, 1, 3, 3, 2, 2), (3, 2, 1, 2, 3, 3), (3, 2, 1, 3, 2, 3), (3, 2, 1, 3, 3, 2), (3, 2, 2, 1, 3, 3), (3, 2, 2, 3, 1, 3), (3, 2, 2, 3, 3, 1), (3, 2, 3, 1, 2, 3), (3, 2, 3, 1, 3, 2), (3, 2, 3, 2, 1, 3), (3, 2, 3, 2, 3, 1), (3, 2, 3, 3, 1, 2), (3, 2, 3, 3, 2, 1), (3, 3, 1, 2, 2, 3), (3, 3, 1, 2, 3, 2), (3, 3, 1, 3, 2, 2), (3, 3, 2, 1, 2, 3), (3, 3, 2, 1, 3, 2), (3, 3, 2, 2, 1, 3), (3, 3, 2, 2, 3, 1), (3, 3, 2, 3, 1, 2), (3, 3, 2, 3, 2, 1), (3, 3, 3, 1, 2, 2), (3, 3, 3, 2, 1, 2), (3, 3, 3, 2, 2, 1)], >Total distinct permutations = 60