In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['q', 'n', 3623, 'I', 'B', 1777, 1201, 'L', 'A', '4069', 'D', '1499', '6643', 'V', 'u', '5987', 'O', 'y', '5405', 'B', 4067, 'q', 'W', 'W', 'S', 7095, 'Z', 3619, 'm', 2233], [6523, 4083, 'C', 5001, 'p', 5489, 'F', 3055, 'A', '4069', 'D', '1499', '6643', 'V', 'u', '5987', 'O', 'y', '5405', 'u', 6291, 'P', 'l', 7913, 7007, 2615, 5489, 3547]