In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['M', 4439, 'l', 5927, 'S', 885, 'F', 'B', 'X', 6591, 9733, 2343, 8427, 'A', '5133', '155', '9771', 'T', '7569', 'x', 'n', '2115', '3011', 'G', 'H', 'p', 'o', '7425', '8683', '8383', '975', 'h', 'o', '671', 'k', 'b', 'm', 'I', 'f', 'k', 'o', 'V', 'h', 5241, 'u'], ['D', 't', 'c', 1517, 7191, 'A', '5133', '155', '9771', 'T', '7569', 'x', 'n', '2115', '3011', 'G', 'H', 'p', 'o', '7425', '8683', '8383', '975', 'h', 'o', '671', 'k', 'b', 'm', 'I', 'f', 'l', 'V', 'V', 'x', 'K', 'B', 1463, 'u', 5199, 9941, 775, 'h', 9003, 9841, 'w', 'G', 'M', 'u']