In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['f', 'P', 'r', 'n', 'O', '8917', 'A', 'w', 'x', 'M', '6937', '2995', 'B', 'h', 'r', 'b', 'j', '7189', '181', '2043', 'I', '2095', '8263', '4471', 'w', 'T', 9875, 'o', 2971, 'p', 3937, 2229, 1473, 3679, 2507], ['c', 6737, 'Z', 2193, 'P', 7635, 3423, 3183, 'I', 'i', 2457, 'q', 9377, 8531, 'M', 1469, 1317, 'U', 'h', 'h', 3629, 'n', 'O', '8917', 'A', 'w', 'x', 'M', '6937', '2995', 'B', 'h', 'r', 'b', 'j', '7189', '181', '2043', 'I', '2095', '8263', '4471', 'w', 'j', 8189, 1411, 6609, 'y', 1227, 3751, 'O', 905, 'y', 'u', 'U']