In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['n', 3671, 'M', 'K', '1275', 'n', '8225', 'E', 'W', '3533', '8755', 'h', 4071, 'K'], ['B', 'D', 'F', 'l', 3577, 7063, 'y', 't', 'M', 'K', '1275', 'n', '8225', 'E', 'W', '3533', '8755', 'S', 2135, 5771]