In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 'n', 3637, 537, 'u', 7767, 889, 7549, 'F', 2285, 'j', 'p', '4905', '6647', '6455', '65', 'l', 'o', '5179', '4891', '6449', 'h', 'j', '2821', '7737', 'W', '3049', 'a', 'm', '2841', '7065', 'y', 'M', '4629', 'V', 4023, 't', 'Q', 7745, 'A'], ['M', 'i', 'B', 'v', 7099, 'b', 'W', 'Q', 'u', 'S', 'O', 'B', 'R', 5999, 7745, 'y', 'n', 'u', 'k', 4631, 9643, 'D', 'j', 'p', '4905', '6647', '6455', '65', 'l', 'o', '5179', '4891', '6449', 'h', 'j', '2821', '7737', 'W', '3049', 'a', 'm', '2841', '7065', 'y', 'M', '4629', 'z', 't', 'G', 'R', 'k', 'c', 5297, 'M', 8455, 6693, 'e', 'G', 'n', 'a', 2117, 579, 'T', 'u']