In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['R', 'C', 8521, '3877', 'h', 'G', 'R', '1487', 'D', 2955], ['e', 5493, 3361, '3877', 'h', 'G', 'R', '1487', 'N', 'E', 's', 5399]