In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[691, 457, '1293', 'W', 'z', '8449', 'C', 'Z', '1991', 'n', '2509', 'e', '2657', 'c', '1985', '3099', '9993', '7917', '7443', '9265', 'y', '1261', 'C', '6355', 'R', '8135', '6349', 'L', '4319', 'v', '4517', 'b', 'z', 'K', 8205, 9127, 'f', 5377, 71, 'r', 8305, 's', 3523, 'E', 8549, 'h', 1703, 4073, 2313, 'D', 'b', 2511, 6693, 'O', 5485], ['s', 4145, 'Q', 'H', 7385, 'x', 3913, 'D', 'f', 'p', 'Y', 'Y', 8205, 'v', 2255, 673, 'D', 'f', 'j', 5523, 3083, 'W', 'b', 9851, 'r', '1293', 'W', 'z', '8449', 'C', 'Z', '1991', 'n', '2509', 'e', '2657', 'c', '1985', '3099', '9993', '7917', '7443', '9265', 'y', '1261', 'C', '6355', 'R', '8135', '6349', 'L', '4319', 'v', '4517', 'z', 'W', 3207, 2635, 8881, 6429, 'n', 7363, 161, 'v', 6549, 4353, 6841, 4977, 'l', 'P', 1315, 5231, 's']