In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8681, 2743, 1295, 'P', 7217, 7311, 'i', 1153, 'f', '4955', 'S', '655', 'p', '5075', '9553', 't', 'L', '2899', '8345', 'G', 'A', '7171', 't', 't', '863', 'w', 'C', '1157', 'p', '401', 'O', 'u', 'r', 1337, 2399, 6473, 'E', 763, 9019, 2237, 3691, 6071, 7797, 3877, 8555, 1229, 'r', 'H', 'A'], ['H', 'p', 'D', 't', 93, 'V', 355, 'y', 'b', 4647, 4183, 'B', 'u', 9619, 6287, 6225, 'l', 'j', 41, 'm', 'H', 'y', '4955', 'S', '655', 'p', '5075', '9553', 't', 'L', '2899', '8345', 'G', 'A', '7171', 't', 't', '863', 'w', 'C', '1157', 'p', '401', 'O', 'u', 'L', 'u', 6727, 1337]