In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['l', 7391, 'J', 1589, 8187, 'S', 4699, '6995', '7685', 'P', '6997', '3043', 'e', '7115', 's', '8787', 'y', 'R', 's', 'b', '6567', '1893', '1563', 'B', 'C', 'U', 3421, 'q', 2339, 4517, 'e', 'U', 6817, 'z', 'V'], [223, 'U', 'k', 'h', 9511, 'e', 'b', 'v', 'f', 7317, '6995', '7685', 'P', '6997', '3043', 'e', '7115', 's', '8787', 'y', 'R', 's', 'b', '6567', '1893', '1563', 'B', 'a', 4013, 1645, 'B', 607, 5761, 'B', 'O']