In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1969, 1099, 'q', '9905', 'q', 'o', 'l', 'z', '9921', '2747', 'd', 5219, 'w', 6169], [7669, 881, 'x', 8641, 'D', 'a', 'k', 'q', '9905', 'q', 'o', 'l', 'z', '9921', '2747', 'c', 'S', 8377, 'w', 4283, 6533, 8245, 'L']