In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['H', 3635, 'N', 'c', '2297', 'U', 'W', 'j', '7741', 'u', '2283', 'B', 9737, 'n'], ['U', 2701, 'e', 'z', 'd', 3631, 'E', 'V', 'c', '2297', 'U', 'W', 'j', '7741', 'u', '2283', 'c', 'F', 'b']