In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 7569, 'Z', 2209, 'K', 'e', 513, 1363, 'h', 6667, 'K', '4239', 'v', 'O', 'L', 'K', '671', 't', '6091', 'N', 'I', '8611', '4721', 'h', 117, 6201, 'f', 7989, 8941, 'U', 'x', 'N'], [2485, 'L', 2831, 297, 8101, 4111, 'K', '4239', 'v', 'O', 'L', 'K', '671', 't', '6091', 'N', 'I', '8611', '4721', 'm', 3737, 'E', 'S', 'T', 71, 'C', 8085, 'G', 8787, 3915, 'g']