In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8685, 'M', 2469, 4021, 5747, 5817, 'W', 8855, 'j', '9645', '9069', 'C', 'k', '9911', '381', 'G', 'W', 'w', 'B', 'k', 'R', '3515', 'v', 'e', '635', 'd', 'l', '113', 's', 'A', 'w', 'i', 461, 'L', 'R', 'X', 'U', 'X', 4815, 'I', 5597, 'q', 6149, 2929], [8311, 'r', 'i', 'l', 'G', 'm', 4467, 'W', 's', 'W', 4427, 'q', 'J', '9645', '9069', 'C', 'k', '9911', '381', 'G', 'W', 'w', 'B', 'k', 'R', '3515', 'v', 'e', '635', 'd', 'l', '113', 's', 'O', 6917]