In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Z', 613, 6049, 4587, 'i', 2263, 'a', 9203, 'i', 'F', 3883, 9497, 'J', 'O', 3943, 'X', '9475', 'p', '1193', '4357', '8411', 'A', '5109', 'k', 'j', 'Z', '3401', 's', '2109', 't', 'W', 'B', 'U', 'R', 'o', 3229, 'c', 6003, 6215, 1713, 'x', 5387, 'F', 445, 'L', 9187, 1697], [6839, 'm', 'r', 'I', 'I', 8933, 'j', '9475', 'p', '1193', '4357', '8411', 'A', '5109', 'k', 'j', 'Z', '3401', 's', '2109', 't', 'W', 'B', 'U', 'O', 6441, 8907, 'Q', 1887, 4875, 5703, 'X', 7557]