In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1885, 6753, 'k', 8461, 8247, 'i', 2041, 'M', 'r', 'f', 717, 3587, 'v', 6391, 'l', 'O', 3469, 'q', 'G', 7031, 't', 'Q', 1879, 6881, 9821, 'Q', 'R', 'U', 'Z', 'A', 'Z', '8565', 'Y', '6943', '5409', '7649', 'D', 'Z', 'Y', '3999', 'v', 'k', '1889', 'v', 'I', 'K', '6959', 'R', 'f', '6847', 'O', 'r', 'W', 'r', '5323', 'y', 'T'], ['J', 'R', 6469, 3343, 2773, 'p', 'h', 'd', 5463, 'T', 6743, 'v', 6831, 'O', 7197, 'F', 'e', 'x', 7279, 'D', 5527, 'L', 'A', 5157, 'b', 7519, 7039, 'U', 'Z', 'A', 'Z', '8565', 'Y', '6943', '5409', '7649', 'D', 'Z', 'Y', '3999', 'v', 'k', '1889', 'v', 'I', 'K', '6959', 'R', 'f', '6847', 'O', 'r', 'W', 'r', '5323', 'X', 'V', 'B', 1743, 5057, 6733, 7497, 7503, 'L', 3407, 'O']