In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 'N', 1595, 'K', 6039, 'V', 'V', '4169', 'Q', 'R', '333', '8343', 'b', 5595, 'Q', 7557, 5821, 7777], [1733, 'C', 'V', 'E', 'V', 'V', '4169', 'Q', 'R', '333', '8343', 'y', 'K', 6641, 'a', 3397, 'O']