In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['m', 1539, 4437, 2283, 2983, 'o', 'H', 'K', 7971, 'k', 'Y', 'G', 1541, 6991, 'N', 'Z', 'z', 'r', 'x', 'o', 's', '3789', '9503', 'E', 'Q', '897', 'E', '7385', '4141', '9001', '9905', 'O', 't', '2499', 'k', 'a', '9593', '7981', '9591', '5173', 'b', 'N', 'U', 7711, 'y', 6519, 1631, 5165, 'V', 9335, 's', 4081, 3109, 5817, 8493, 2193, 9023, 1703], [3533, 8987, 's', 'S', 'z', 'r', 'x', 'o', 's', '3789', '9503', 'E', 'Q', '897', 'E', '7385', '4141', '9001', '9905', 'O', 't', '2499', 'k', 'a', '9593', '7981', '9591', '5173', 'b', 'T', 'c', 9629, 'K', 2773]