In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8903, 6611, 1631, 3897, 1563, 7477, 8803, '8111', '2813', '5071', 'H', 'a', 's', 'p', '841', 'R', 'j', 5485, 'D', 'r', 'Z', 8105], ['p', 'k', '8111', '2813', '5071', 'H', 'a', 's', 'p', '841', 'q', 8071, 6493, 5643, 1251, 'O', 'H', 9989]