In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['c', 'n', 3385, 3479, 8563, 3931, 9711, 6669, 'X', 6341, 'q', 'D', 'd', 'p', 'S', 'Z', 'q', '7797', 'G', '6283', '8907', '7143', 'D', '6733', '9107', 'W', 'C', '5723', 'r', '9527', '4845', '7153', '6097', 'k', 'F', 'h', 'B', '8635', '167', '3475', '2131', 'F', 3877, 3211, 'O', 'j', 'F', 6813, 3929, 6375, 's', 6091, 'd', 'u', 'G', 'T', 'K', 4675, 'c', 6089, 'u'], ['p', 'C', 'D', 809, 4023, 'f', 'Z', '7797', 'G', '6283', '8907', '7143', 'D', '6733', '9107', 'W', 'C', '5723', 'r', '9527', '4845', '7153', '6097', 'k', 'F', 'h', 'B', '8635', '167', '3475', '2131', 'k', 'n', 'u', 'H', 'f', 'O', 6131, 2993]