In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 'b', 'U', 'C', 'o', 'B', 'b', 'G', '543', 'T', 'H', '9931', 'C', '5497', 'D', 'q', '5809', '8101', '207', '2729', 'Y', 'W', '857', 's', '6843', 'j', 'X', 'D', 5513, 'Q', 7163, 23, 'F', 'i', 'm', 8841, 275, 'I', 4117, 'r', 'q', 4401, 2491, 829, 'W', 4555, 'P'], [7511, 9115, 'p', 1243, 'B', 9947, 's', 'p', 'T', 'G', 1219, 1187, 'Y', 6583, 'i', 4087, 'm', 7957, 'N', 'U', 'C', 'o', 'B', 'b', 'G', '543', 'T', 'H', '9931', 'C', '5497', 'D', 'q', '5809', '8101', '207', '2729', 'Y', 'W', '857', 's', '6843', 'Y', 1771, 5323, 5795, 'I', 9583, 4427, 't', 5631, 'q', 'r', 'a', 5027, 'i', 'S', 2625, 553, 'O', 'p', 'j', 1095, 'g', 'a']