In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7393, 361, 7033, 'Q', 5143, 4937, 5079, '4513', 'S', '2005', '9805', 'H', 't', '2457', '8697', 'm', 'N', 9443, 9637, 5881, 2579, 'Q'], ['x', 3109, 6275, 'f', 9511, '4513', 'S', '2005', '9805', 'H', 't', '2457', '8697', 'm', 'w', 8347, 817, 'e', 1859, 1797, 'I']