In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['X', 6431, 'O', '9101', 'l', 'D', 'Q', 'M', '8881', '9955', 'E', '2703', '8301', 'b', 'o', 'L', 'B', 'D', 8955, 's', 2393], ['D', 9287, 5103, 'r', 'm', '9101', 'l', 'D', 'Q', 'M', '8881', '9955', 'E', '2703', '8301', 'b', 'g', 'n', 'B', 6201, 1791, 6839, 'V', 'Z', 'h']