In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[5193, 4467, 'a', 'X', 969, 6677, 2123, 2993, 'k', 'h', 'O', '8245', '4281', 'H', '179', 'N', 'v', '3499', 'L', 'w', '6585', 'W', '405', 'R', 'F', 2049, 7149, 'd', 3239, 'x'], [5741, 'B', 'U', 'b', 'O', 'e', 'a', 'u', 4323, 5201, 6157, 's', 3943, 'k', 'h', 'O', '8245', '4281', 'H', '179', 'N', 'v', '3499', 'L', 'w', '6585', 'W', '405', 'M', 3101]