In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4713, 943, 'x', 's', 1537, 'Z', '2939', '4901', '1983', 'm', 'V', 'l', 4281, 6959], ['w', 9793, 'n', 'w', 'u', 'Z', '2939', '4901', '1983', 'm', 'g', 9035, 8117]