In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['u', 'd', 'b', '743', 'p', '2717', 'f', '2189', 'k', 'J', 'T', 'b', 'F', 'w', 'V', 2823], ['g', 'p', 'E', 'p', 481, 'P', '743', 'p', '2717', 'f', '2189', 'k', 'J', 'T', 'D', 1877, 9553, 9603]