In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['K', 5557, 3175, 'e', 'A', 'q', 'c', 4149, 247, '2461', '8953', '7153', '9525', 'W', '149', '2777', '291', 'q', 'z', '6711', '5955', 'D', 'k', 7505, 1903, 7999], [7323, 'q', 'C', 8617, 3593, 'D', 'k', 7457, 'm', 5419, 5531, '2461', '8953', '7153', '9525', 'W', '149', '2777', '291', 'q', 'z', '6711', '5955', 'D', 'U', 'F', 6905, 1981, 'S', 'E', 'v']