[(0, 1, 2, 3), (2, 4, 5, 6), (3, 5, 7, 8), (0, 4, 7, 9), (1, 6, 7, 10), (0, 6, 8, 11), (2, 8, 9, 10), (1, 5, 9, 11), (1, 4, 8, 12), (3, 4, 10, 11), (3, 6, 9, 12), (0, 5, 10, 12), (2, 7, 11, 12), (8, 13, 14, 15), (2, 13, 16, 17), (12, 14, 16, 18), (5, 15, 17, 18)]
) : 931382297895751968781