In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['C', 4645, 'c', 'O', 6091, 1125, 'I', 5299, 'I', 4287, 'l', 3881, 'D', 9691, 'R', 'Q', 'D', '3535', '7737', 'O', 'n', 'A', '9321', 'u', 'x', '445', 'G', '5053', '9743', 'D', 'b', '1973', '3979', 'F', 'Y', 5715, 9519, 8199, 7627, 'P', 8127, 'Z'], [767, 't', '3535', '7737', 'O', 'n', 'A', '9321', 'u', 'x', '445', 'G', '5053', '9743', 'D', 'b', '1973', '3979', 'F', 'C', 2985]