In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2725, 8817, 'a', 'Q', 'V', 'U', 'I', 'V', 'k', 'U', 'D', 'Y', '6063', 'x', 'e', '733', 'A', 'b', '7173', '2605', '8115', 'D', 9685, 1907, 'F'], [5119, 'l', 'D', 7143, 'x', 'U', 2135, 'E', 3573, 'V', 'U', 'I', 'V', 'k', 'U', 'D', 'Y', '6063', 'x', 'e', '733', 'A', 'b', '7173', '2605', '8115', 'B', 'u', 5965, 'h']