In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['K', 'y', 'F', 5143, 'T', 1315, 'v', 'M', '3337', '4185', 'L', '8721', '2351', '8363', 'b', 7309, 3619, 'y', 7213], [4391, 4069, 'v', 'M', '3337', '4185', 'L', '8721', '2351', '8363', 'N', 7005]