In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8413, 't', '1703', 'Q', 'C', 'V', '969', '8495', 'm', '2121', '8857', 'G', 'E', 'F', 9707, 5097, 4837, 7881], ['E', 4731, '1703', 'Q', 'C', 'V', '969', '8495', 'm', '2121', '8857', 'G', 'W', 6565, 'x', 'w', 5733, 4109, 's', 'g', 2469, 7399]