In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['l', 'T', 8399, 'C', 't', '2131', 'Z', 'C', 'O', 'M', 't', '1375', 'q', 'w', 3759, 't'], [2193, 1691, 9647, 3819, 2099, 2759, 2119, 't', '2131', 'Z', 'C', 'O', 'M', 't', '1375', 'q', 'q', 6609, 'y']