In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3043, 'd', 1055, '2909', 'J', 'D', '4735', '6701', 'v', 'P', '4341', '7905', 'G', '5297', '6721', 'Y', 'f', 4599], ['Q', 'X', 2931, 'f', 3139, 'r', 3625, 4375, 'B', 8381, '2909', 'J', 'D', '4735', '6701', 'v', 'P', '4341', '7905', 'G', '5297', '6721', 'N', 8281, 'W', 'u', 5969, 'w', 'b', 1735, 'j']