In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['e', 7227, 205, 'k', 8377, '7471', 'b', '1975', '4615', '975', 'F', 9007, 'b', 413, 6319], ['h', 'm', 's', 7367, 9781, '7471', 'b', '1975', '4615', '975', 'U', 'v']