In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4753, 5127, 'l', 'S', 3841, 'D', 4457, 8615, 's', 'm', 6047, 'V', 3771, 'k', 4613, 'C', 'T', 'O', 5571, 5643, 'A', '6643', 'M', 'u', '3391', '7017', '6367', 'l', '5355', '4875', 'V', 'R', 'e', 'Q', 'O', 'E', 'F', 'c', '2147', '2615', 'I', '7179', '415', 'L', '2231', 'j', '4399', 'V', 5907, 737, 'b', 5641, 'U', 'f', 1803, 'H'], ['E', 'l', 4873, 'C', 'w', 5085, 'q', 6897, 6229, 2705, 'I', 7561, 7611, 'D', 1069, 'k', 'H', 4873, 4597, 6533, 8617, 'X', 3419, 'A', '6643', 'M', 'u', '3391', '7017', '6367', 'l', '5355', '4875', 'V', 'R', 'e', 'Q', 'O', 'E', 'F', 'c', '2147', '2615', 'I', '7179', '415', 'L', '2231', 'j', '4399', 'u', 'w', 'P', 7833, 'n', 5219, 'a', 2037]