In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 5819, 3095, 'j', 'Y', '6443', 'H', '3801', 'n', '6297', '8539', '221', '8531', '9207', 'v', '9003', '4271', 'H', 'U', 'N', 'x', 'C', '4703', '5147', 'W', 'f', '6619', '7611', 't', 'R', '9895', 'D', 'Z', 2315, 'e', 7539, 839, 'E', 'B', 1169, 7211, 4833, 'O', 'H', 'P'], [791, 'L', 'z', 'k', 6233, 357, 'U', 'D', 'W', 'l', 'm', 'G', 'f', 'K', 1825, 'g', 8113, 991, 'W', 4577, 353, 'Y', '6443', 'H', '3801', 'n', '6297', '8539', '221', '8531', '9207', 'v', '9003', '4271', 'H', 'U', 'N', 'x', 'C', '4703', '5147', 'W', 'f', '6619', '7611', 't', 'R', '9895', 'r', 'c', 'z', 1067, 'F', 'i', 's', 'k', 8967, 'p', 'y', 'y', 'z', 'I', 'm', 'y', 'z', 1121, 8085, 1471]