In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4801, 'Q', 't', 5243, 4739, 'o', '6805', '5813', '7849', 'E', '6599', '8087', 'q', 'N', 'e', '3013', 'x', '4381', 'O', 'k', '5899', '1931', 'B', '511', 'w', 8431, 'F', 'U', 927, 'I', 'P', 'y'], [4137, 'b', 'q', 3673, 2135, 8715, 1793, 6629, 4229, 'r', 'X', 6407, 'T', 727, 'o', '6805', '5813', '7849', 'E', '6599', '8087', 'q', 'N', 'e', '3013', 'x', '4381', 'O', 'k', '5899', '1931', 'B', '511', 'k', 't', 2723, 'Y', 3707, 'F', 4227, 'w', 3921, 1239, 315, 'c', 'W', 'r', 8993, 655, 'u', 'x']