In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['V', 'C', '3531', 'c', '3345', '833', 'F', 'x', 645, 'n'], [369, 2893, 'q', '3531', 'c', '3345', '833', 'z', 'I', 'U', 563]