In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2485, 'j', '3849', '1153', '5351', '7807', 'k', '2313', 'h', 6239, 'v'], ['j', 'r', 'x', 2411, '3849', '1153', '5351', '7807', 'k', '2313', 'a', 8413, 9391, 'v', 2859]