In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['e', 'X', 9477, 8671, 'E', '4567', '6331', 'V', '8679', '6451', '6793', '2013', 'A', 3301, 4491, 2161, 2085, 3737, 265, 'Z'], ['H', 315, 3329, 'a', 'f', 'x', 'E', '4567', '6331', 'V', '8679', '6451', '6793', '2013', 't', 657, 561, 149, 1249, 8739]