In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['r', 'F', 'a', 'W', 'l', '5533', 'v', 'Q', '2975', 'P', 'i'], [5309, 'c', 9071, 9257, 'W', 'l', '5533', 'v', 'Q', '2975', 'e', 'i', 'C', 'w']