In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['D', 5485, 2109, 5681, 'M', 5665, 4655, '4327', 'U', 'h', 'R', 'a', '9183', '6607', 'A', 'E', '4971', 'u', 'L', 'k', 'z', 7351, 'W'], ['H', 7247, 'I', 'W', 'f', 4461, '4327', 'U', 'h', 'R', 'a', '9183', '6607', 'A', 'E', '4971', 'u', 'L', 'Q', 8685, 's']