In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1817, 5343, 'n', 1259, 6681, '6053', '1683', '5261', 'X', 'z', '3163', 'c', '2907', '6021', 'J', 'y', '3123', '4751', 'J', 'I', '6085', 'u', 'l', 'i', 4577], ['o', 79, 43, 5151, 'N', 'h', 'i', 'v', 'V', '6053', '1683', '5261', 'X', 'z', '3163', 'c', '2907', '6021', 'J', 'y', '3123', '4751', 'J', 'I', '6085', 'u', 'v', 167, 6243, 'j', 8889, 's', 'Z', 4713, 4581, 8089, 5021, 6455]