In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['F', 'L', 8217, 5555, 'M', 'D', 'S', 'u', 'b', 'X', '3721', '5831', 'z', '7389', 'X', 'A', '6947', 'Y', '6355', 't', 'S', 6039, 95, 'S', 'o', 'T', 2545, 3325, 9993, 7819], ['L', 5553, 'A', 8911, 'L', 'n', 2619, 7503, 'S', 'u', 'b', 'X', '3721', '5831', 'z', '7389', 'X', 'A', '6947', 'Y', '6355', 't', 'D', 'w', 'F', 459, 'a', 'j']