In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 'y', '9237', 'S', '2307', '5815', 'K', 'O', 2033, 'O', 'O', 2855], ['p', 'o', 2887, '9237', 'S', '2307', '5815', 'K', 'K', 3247, 9575]