In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8229, 'E', 245, 211, 8887, 'C', '7255', '9619', '9117', 'W', '6399', '6507', 'v', '8015', 'u', 's', 'U'], ['P', 8203, 'B', 'x', 8811, 4655, 'R', 3497, 8111, '7255', '9619', '9117', 'W', '6399', '6507', 'v', '8015', 'u', 'h', 'M', 4861, 3913, 'r']