In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3003, 7023, 8421, 'Q', 'Z', 'l', 's', 'R', 'z', 8389, '6569', 'S', 'W', '3887', '3935', '4907', '8971', 'f', '4931', 'S', 'r', 't', 8337, 3125, 'z', 879, 'B', 7547], ['v', 1081, 'Q', 'x', 'q', 'I', 325, 1659, '6569', 'S', 'W', '3887', '3935', '4907', '8971', 'f', '4931', 'S', 'r', 'q', 5277, 'n']