In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['o', 'W', 7987, 'q', 'K', 8665, 'X', '8031', 'V', 'U', 'S', 't', 'G', '4731', 'P', 'b', 'Q', 'i', 'l', 'u', '5391', 'z', '8907', 'f', 'y', 'c', 'n', 'W', 't', 3441, 'h', 'E', 6901, 'b', 'u', 'f', 'l'], ['i', 1529, 7285, 8339, 'n', 'O', 'g', 265, 1493, 'r', 8479, 'U', '8031', 'V', 'U', 'S', 't', 'G', '4731', 'P', 'b', 'Q', 'i', 'l', 'u', '5391', 'z', '8907', 'f', 'y', 'c', 'n', 'W', 's', 2515, 'P', 7913, 6985, 'N', 4789, 'y', 1685, 9195, 'P', 'y', 'I', 4667, 'A', 'K', 'b', 'v', 6145, 'y', 947]