In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['T', 7185, 'W', 'b', 'O', 'm', '1753', '9511', 'C', 'S', 'M', 'l', 'r', 3815, 5833, 'a', 'z', 6809], ['b', 'n', 'd', 'z', 8363, 7139, 'x', 'O', 'm', '1753', '9511', 'C', 'S', 'M', 'l', 'p', 'v', 3365]