In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8235, 6785, 'P', 'N', 'y', '5503', '6065', '2039', 'Q', 'o', 'F', 7791, 'R', 'm', 3633], ['s', 863, 'z', 'y', '5503', '6065', '2039', 'Q', 'o', 'o', 6907, 5837, 's', 2553]