In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Y', 'c', 439, 'p', 9467, 5597, 'O', 'g', 'O', 'c', 'V', 'r', '8109', '8467', '7813', 'l', 'U', 'A', 'R', '7303', 'K', 'o', 'c', '7745', 's', 'I', '6725', 'd', '2629', 'S', 6885, 4227, 'r', 'I', 1629, 4717, 'V', 'z', 3737, 8947, 'w', 'k', 'C', 8189, 'l', 2205, 'z', 'n'], ['T', 'm', 'y', 'F', 'Z', 6373, 'R', 5609, 4621, 6913, 3119, 1785, 9547, 9873, 6579, 'x', 'b', 3249, 'g', 'O', 'c', 'V', 'r', '8109', '8467', '7813', 'l', 'U', 'A', 'R', '7303', 'K', 'o', 'c', '7745', 's', 'I', '6725', 'd', '2629', 'z', 'y', 'A', 'q', 't', 6351, 'B', 'w', 'f', 's', 'q', 'P', 'Y', 9947, 4237, 6667, 5335, 8143, 'c', 6905, 2145]