In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3375, 'L', 2639, 'w', '4429', 'B', 'O', '1463', 'F', 8079, 'u', 9947], [7287, 'T', 'B', '4429', 'B', 'O', '1463', 'X', 'J', 7071, 9885]