In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3707, 6473, 'o', '495', '3897', 'O', 'x', '2409', '6843', '3477', '5411', 'G', 9269, 5835, 2723, 'm', 'n', 6209], [7513, 4579, 6017, 7723, '495', '3897', 'O', 'x', '2409', '6843', '3477', '5411', 'w', 'T', 'g', 'M', 'V']