In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[53, 7075, 'J', 'U', 3399, 8553, 7179, 'v', '859', '2889', 'x', '5451', 'C', 'A', 'g', 'c', 'Z', '8373', 'F', 2493, 'J', 8931, 4661, 'E', 'O', 'm', 3723, 3453], ['g', 'C', 3621, 6855, 3777, 1901, 'w', 3367, '859', '2889', 'x', '5451', 'C', 'A', 'g', 'c', 'Z', '8373', 'o', 'G', 'i', 7645, 8855, 'V', 'K', 547]