Given the task definition and input, reply with output. In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.

[4321, 'v', 'h', 'u', 7797, 'r', 'r', '1253', '9855', '6881', 'z', '7627', 'W', 'N', 'W', 'e', 'n', 7755, 'm', 'h', 7815], [4269, 4673, 'r', '1253', '9855', '6881', 'z', '7627', 'W', 'N', 'Z', 'g', 'G', 2125, 'X', 3551]

r, 1253, 9855, 6881, z, 7627, W, N