In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9565, 4989, 'y', 'E', 'm', 'U', 2807, 'B', 'T', 'q', 'O', 7921, 's', 'C', 4327, 'P', 'Z', '8407', '7447', '897', 'Y', 'p', 'T', '3405', 'U', 'Q', '6797', '81', '9505', '123', '9629', 'K', '3281', 'l', 'H', 'M', '4915', '6169', '8819', 'U', 'x', 'p', 'u', 2221, 3841, 'C', 'F', 3947, 'x', 10005, 6975, 'i', 7451, 8319, 5439, 4393, 'W', 'E', 'i', 9295, 1333, 9561, 'J', 3245], ['c', 173, 's', 'Y', 'd', 7681, 1751, 'F', 4145, 9701, 7593, 'v', 9769, 'n', 3127, 'm', 'z', 'Z', 'I', 5965, 469, 2581, 9647, 'Z', 'P', 'Z', '8407', '7447', '897', 'Y', 'p', 'T', '3405', 'U', 'Q', '6797', '81', '9505', '123', '9629', 'K', '3281', 'l', 'H', 'M', '4915', '6169', '8819', 'U', 'x', 'K', 8097, 'f', 'p', 2567, 'c', 3963, 8037]