In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 1455, 'Q', 'e', 'g', '6631', 'C', 'l', '7833', '3567', '1781', '703', 'o', '4151', 'a', 'e', 'Y', 7089, 'x', 'Q', 'P', 'j'], ['Q', 'E', 6037, 'P', 'x', '6631', 'C', 'l', '7833', '3567', '1781', '703', 'o', '4151', 'a', 'e', 'D', 8993, 9031, 'G', 'y']