In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[333, 'C', 'Q', 1473, 'O', 'R', 1999, 2317, 'U', 'Z', 'y', '3555', '1231', 'c', '6471', 'z', '7263', 'i', '5109', '8355', 'i', '7101', '3573', '1743', 'D', '8129', '3387', '4575', '7291', 'D', 't', '8227', 'a', 'O', 'Q', 'J', 'K', '8843', 't', 'l', 6149, 'X', 'g'], [4933, 't', 2307, 'E', 'L', 'b', 2507, 'j', 'C', 2725, 8943, 7999, 5331, 'F', 8101, 'c', 3361, 'x', 'u', 'I', 4023, 'E', 'G', 'y', '3555', '1231', 'c', '6471', 'z', '7263', 'i', '5109', '8355', 'i', '7101', '3573', '1743', 'D', '8129', '3387', '4575', '7291', 'D', 't', '8227', 'a', 'O', 'Q', 'J', 'K', '8843', 't', 'q', 7391, 'K', 3391, 'y', 1275, 7205, 5373, 1549, 'f', 1871, 'k', 'x']