In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1605, 'P', 'v', 5809, 'h', 'i', '3259', 't', '5755', '1277', '8349', '7123', '2087', '2471', 'c', 'M', 'O', '1647', 'k', 'I', 'M', 'P', 4103, 931, 4319, 4933, 2495, 'p', 6233, 8265, 3327, 'L'], [7589, 9119, 'v', 7147, 'a', 'b', 9313, 'C', 4709, 'I', 381, 1981, 2417, 8787, 9153, '3259', 't', '5755', '1277', '8349', '7123', '2087', '2471', 'c', 'M', 'O', '1647', 'k', 'I', 'M', 'Y', 8783, 9643, 3473, 'E', 7215, 3105, 9519, 9063]