In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['i', 489, 'N', 6533, 'L', 7905, 7729, 8197, 907, '4625', 'J', '9269', '1587', '4855', '3265', '6231', '2873', '327', 'm', '8801', 'T', '7191', 'r', '7973', '6553', 'U', '1463', 'z', 4167, 1657, 9383, 1853, 1881, 'k', 2935, 7445, 5353, 8123], [553, 8459, 'V', 6901, 'k', 6459, 'C', 'K', 8169, 759, 7995, 1413, 'z', 'p', '4625', 'J', '9269', '1587', '4855', '3265', '6231', '2873', '327', 'm', '8801', 'T', '7191', 'r', '7973', '6553', 'U', '1463', 'R', 8201, 6557, 9943, 'O', 'l']