In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8545, 3753, 's', 6379, 'O', '729', '7837', 'x', 'H', '3057', 'F', 'n', 'I', 'x', 'G', 'r', 4377, 9617], ['A', 'p', 6779, 5737, 'V', 'i', 5375, 'O', '729', '7837', 'x', 'H', '3057', 'F', 'n', 'I', 'x', 'G', 'U', 'h', 'p', 8387, 5823, 263, 1459, 825]