In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9531, 4485, 'v', 'r', 'f', 'H', '8253', 'm', 'q', '6155', 'b', 'J', 'l', 'D', 2427], [15, 'q', 6461, 3413, 31, 8407, 8961, 'o', 'r', 'f', 'H', '8253', 'm', 'q', '6155', 'b', 'J', 'l', 'Z', 5615, 8409, 113]