In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Y', 'l', 9555, 5529, 'M', 'B', 'b', 9039, 5623, 2799, 'h', 5297, 6123, 'g', 'I', 'Y', 225, 1741, 'r', 6429, 221, 'b', 'y', 'c', 'i', '6839', 'p', 'b', 'R', 'y', 'u', 'J', '6839', 'B', '6589', 'u', '7473', '5173', '2745', 'G', '113', '8253', 'N', 'C', 'm', '5469', '9105', 'B', '1165', 'd', 'a', 1753, 'm', 'B', 5547, 'y', 'M', 'L', 'd', 'u', 1999, 913, 's', 353, 'Q'], ['z', 'c', 9775, 767, 'C', 'J', 5541, 149, 5335, 'w', 'o', 'a', 'c', 'i', '6839', 'p', 'b', 'R', 'y', 'u', 'J', '6839', 'B', '6589', 'u', '7473', '5173', '2745', 'G', '113', '8253', 'N', 'C', 'm', '5469', '9105', 'B', '1165', 'i', 'p']