In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['L', 't', 'j', 7237, 305, 'F', 'f', 'C', 'r', 'Z', 6373, 7899, 9671, 'j', '2599', '1571', 'X', 'l', 'o', 'G', '4275', '7153', 'v', '3671', 'P', '2283', 'a', '1187', '3587', 'g', '8969', 'q', 'a', 'R', 'r', 'U', '9841', '7621', '493', '2567', 'I', 'K', 'K', 4165, 'N', 8221, 'a', 'L', 9913, 'J', 5689, 'z', 4843, 153], ['H', 7331, 8259, 2005, 6195, 'Z', 'E', 'v', 'j', '2599', '1571', 'X', 'l', 'o', 'G', '4275', '7153', 'v', '3671', 'P', '2283', 'a', '1187', '3587', 'g', '8969', 'q', 'a', 'R', 'r', 'U', '9841', '7621', '493', '2567', 'K', 9509, 'v', 'x', 1037, 'y', 3461, 'z', 'Z', 'l']