In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['e', 3659, 8339, 6975, 'U', 4931, 6365, 'l', 'a', 'x', 'T', 'N', 'X', 'L', '5621', 'b', '5183', '3863', '1259', 'I', 'N', 1929, 'p'], [209, 'k', 2003, 3241, 'a', 'x', 'T', 'N', 'X', 'L', '5621', 'b', '5183', '3863', '1259', 'I', 'V', 5301, 7487, 6265, 'G', 'n', 4561, 6411, 'G']