In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4439, 'b', 7511, '6879', 'G', 'o', 'e', 'G', '5345', '3333', 'P', 'P', '6033', 'a', '7661', '7867', 'a', 'X', 'Y', 'I', 9231, 'i', 'k', 7915, 4839, 8903, 'V', 6619, 'O', 'N', 's', 'j'], ['l', 'f', 'a', 5773, 'C', 7223, 'K', 3081, 2201, 'G', '6879', 'G', 'o', 'e', 'G', '5345', '3333', 'P', 'P', '6033', 'a', '7661', '7867', 'a', 'X', 'Y', 'P', 'k', 'r']