In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 7137, 2563, 'O', 'A', '813', 'u', 'a', 'S', '4893', 'H', 'r', '4873', 'r', '8189', 'n', 1193, 9883, 's', 9359, 7093, 9375, 'U', 1815, 'l'], ['K', 'j', '813', 'u', 'a', 'S', '4893', 'H', 'r', '4873', 'r', '8189', 'R', 9011, 'r']