In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['o', 'G', 'm', 2261, '7127', 'D', '7509', '7573', 'H', 'C'], ['e', 'Z', '7127', 'D', '7509', '7573', 'W', 'W', 'N']