In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8811, 'f', 'p', 'U', 1261, 'i', 'q', 7839, 9485, 7473, 's', '7741', 'H', 'I', '1501', 'u', 'W', '4141', 'o', 'd', 'Y', 'H', 'Q', 8785, 6207, 'D', 'q', 771, 7249], ['p', 'o', 7967, 'n', 7725, 3873, 'X', 'O', 'S', 3167, 2411, '7741', 'H', 'I', '1501', 'u', 'W', '4141', 'o', 'd', 'Y', 'H', 'k', 17, 'O', 'Q', 'N', 1393]