In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4565, 1301, 'A', 2341, 'L', 'o', 'E', '3605', '6969', '4321', '2419', 'v', '6857', '8073', '2793', '17', 'a', 8505, 'x', 6089, 'S', 7505], [9053, 3611, 4175, 4433, 9921, 'U', 'E', '3605', '6969', '4321', '2419', 'v', '6857', '8073', '2793', '17', 'b', 7935, 8963, 8719, 'n', 3839, 6015, 2855, 6559]