In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[947, 4473, 'o', 't', 7369, 'U', 'G', 'o', 'd', 'c', 'H', 'i', '7403', 'R', 'V', 'B', 'U', '6713', 'y', 'q', 'W', '2901', '6277', 'O', 'a', 3363, 2413, 8427, 4685, 2115, 9225, 6179, 3225, 1433, 'v', 8731, 4707, 4973], [3451, 7563, 'k', 1885, 3497, 'z', 5341, 'l', 'm', 'l', 'd', 'c', 'H', 'i', '7403', 'R', 'V', 'B', 'U', '6713', 'y', 'q', 'W', '2901', '6277', 'O', 'U', 'T', 5653, 6537, 7217, 7243, 7209, 'Y', 1551, 's', 'Z', 'E']