In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['r', 8721, 8605, 'e', 2971, 3959, 63, 'M', 'D', 'x', 'h', 'w', 'l', 'F', '7599', 'M', 's', 'D', 'r', 'V', '7535', '9433', 'D', 'X', '8959', 'O', 2955], ['v', 6261, 'a', 3933, 'D', 'x', 'h', 'w', 'l', 'F', '7599', 'M', 's', 'D', 'r', 'V', '7535', '9433', 'D', 'X', '8959', 'n', 6133, 7461, 2763, 'i', 'H', 473, 8399, 'i', 9237, 5559]