In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[37, 2553, 'G', 'a', 325, 613, '4953', '1589', 'W', 'A', 'n', '5241', 'r', '1599', 'a', '6129', 'J', 'H', 'F', 'r', 'u', 'q', 7043, 'a', 'n'], [3683, 'D', 'l', 'G', 'T', 'Z', 'i', 9075, 'M', 'Y', 5963, '4953', '1589', 'W', 'A', 'n', '5241', 'r', '1599', 'a', '6129', 'J', 'H', 'F', 'r', 'u', 'C', 'Q', 'W', 2181, 'O', 'Q', 'D', 5703, 3461]