In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4437, 2055, 'W', 5437, 'M', 5377, 4827, 2789, 2457, 9287, 4459, 'g', 7677, 'E', 'G', 'p', 'F', '5671', '3105', '829', '2223', 'E', '6585', '949', 'l', '5517', '271', 'V', 'd', '2121', '1139', 'n', 'G', 'a', '4199', '9351', '4145', '787', '4575', 'e', '9185', 'E', 'A', 'M', 'X', 'S', 6979, 197, 'n', 'z', 2271, 'Q', 'Q', 9135, 1343, 9979, 'o', 1511, 'L', 8033, 3577, 7141], ['z', 8581, 9551, 4857, 'D', '5671', '3105', '829', '2223', 'E', '6585', '949', 'l', '5517', '271', 'V', 'd', '2121', '1139', 'n', 'G', 'a', '4199', '9351', '4145', '787', '4575', 'e', '9185', 'E', 'A', 'F', 'X', 'b', 'W', 1331, 4455, 2123, 'b', 'r', 'f', 7045, 'D', 's', 's', 'k', 3287, 865, 'z', 4579, 'x', 'e', 9779, 'm']