In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['i', 'v', '9571', 'p', '9029', '567', 'Y', 'C', 't', 'X', 'M', 'Q'], [4425, 307, '9571', 'p', '9029', '567', 'Y', 'C', 'a', 'L', 'V', 'q', 'R', 2683]