In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['m', 'q', 'K', 9885, 'b', 'L', 823, 4347, 7119, '2459', 'z', '9179', '2173', '5425', '7509', '1969', 'a', '5403', 'i', 'H', '1189', 'X', '5593', 'N', 'I', 'v', 2419], [3669, 5561, 'J', 5191, 'H', 'x', 4019, 833, 'K', 'C', 521, 4295, 3927, 2967, 9383, '2459', 'z', '9179', '2173', '5425', '7509', '1969', 'a', '5403', 'i', 'H', '1189', 'X', '5593', 'N', 'I', 'o', 7413, 709, 7125, 'f', 'g']