In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['b', 'Z', 'n', 'O', 'x', 'K', 'J', '5997', '8241', 'O', '9965', 'n', '6043', 'p', '8943', 'F', 'O', '2181', 'k', 833, 9001], [6221, 'H', 'w', 6543, 'o', 1523, 'W', 6091, 'T', 7021, 8161, 1111, 4653, 'x', 'K', 'J', '5997', '8241', 'O', '9965', 'n', '6043', 'p', '8943', 'F', 'O', '2181', 'j', 5791, 3573, 9639, 'a', 4089, 5045, 'e', 'i', 'S', 3157, 1767, 2199, 'P']