In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2391, 'm', 'C', 'f', 'N', 8051, 2079, 'p', 'p', 'f', 7483, 'K', 9367, 6191, 'i', 'B', 6773, '7079', 'm', 'p', '2563', '3165', 't', 'Z', 'Y', 'd', '2355', 'K', '4469', '4447', 'O', '3203', 'H', '7597', 'n', 'K', 3987, 2201, 'N', 'z', 'i', 4825], [7135, 'X', 'v', 'K', 6505, '7079', 'm', 'p', '2563', '3165', 't', 'Z', 'Y', 'd', '2355', 'K', '4469', '4447', 'O', '3203', 'H', '7597', 'n', 'r', 6141, 'Q', 'F', 'm', 2873, 919, 'M', 7011, 5157, 'G', 2287, 6335, 6259, 't', 'K']