In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4413, 9575, 4467, 'S', 9885, 7367, '7511', 'V', 'L', 'g', '3323', 'G', 'P', 'c', '9157', 'W', 'n', 'b', 'L', 'n', 'y', 'b', 6723, 'I', 4213], [969, 8389, 'a', 'W', 'X', 8237, 'G', 'J', 'X', 6663, '7511', 'V', 'L', 'g', '3323', 'G', 'P', 'c', '9157', 'W', 'n', 'b', 'L', 'I', 'A', 9739, 8239, 'C', 'T', 4805, 7801, 6179, 'j', 8205, 5841]