In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['D', 8695, '401', 'd', '1', 'd', 'u', '2919', '5551', 'W', 'J'], ['P', 8761, 'Q', 5547, 3631, 'k', 8505, '401', 'd', '1', 'd', 'u', '2919', '5551', 'I', 1101, 'd']