In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['S', 'A', 'H', 'S', 'q', 'y', 'O', 'x', '2499', '2793', 'b', '8913', '9515', 't', '4875', '323', '7317', 'I', 'O', 'b', 'G', '6431', 's', '1153', 'H', 'i', 'a', 'G', 'Y', '8467', '5977', '227', 'F', '907', '4789', 'G', 2379, 'g', 'm', 'N', 8115, 'e'], ['F', 775, 3277, 2235, 4717, 'G', 'o', 701, 5217, 'X', 7935, 'n', 6893, 7797, 'r', 'j', 9275, 1311, 'g', 5785, 'I', 983, 'k', 957, 'y', 'O', 'x', '2499', '2793', 'b', '8913', '9515', 't', '4875', '323', '7317', 'I', 'O', 'b', 'G', '6431', 's', '1153', 'H', 'i', 'a', 'G', 'Y', '8467', '5977', '227', 'F', '907', '4789', 'k', 4631, 4075, 'J', 'A', 5377, 'I', 'U', 'P', 'c', 3527, 'e', 7125, 5467, 9107, 'm', 'K', 2843, 7939, 'X', 4291, 5191, 'I', 3557, 'w', 7963, 't', 'F']