In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['H', 'e', 7581, 9817, 9557, 3225, 'D', 119, 7147, 2637, 'O', 'L', 2881, 7869, 7005, 6293, 8621, 'R', 'Q', '6983', 'q', '3917', '4947', '489', 'y', '8519', '5663', 'E', 'J', '1213', '21', '9721', 'Y', 'm', '2405', '3847', '9487', '4433', 'e', '3035', 'n', 'q', 4117, 7673, 3221, 'o', 9917, 2389, 'U', 'X', 9407, 8207, 6185], ['W', 2313, '6983', 'q', '3917', '4947', '489', 'y', '8519', '5663', 'E', 'J', '1213', '21', '9721', 'Y', 'm', '2405', '3847', '9487', '4433', 'e', '3035', 'n', 'J', 'Y', 7609]