In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8137, 'L', 5, 3255, 'o', 8545, 4053, 'Y', 'e', 'n', 2451, 5923, 4721, 'y', 4461, 7823, 7971, 'o', 'k', '8809', 'c', 'd', '2767', '2477', '7853', '2535', 'o', 'B', 'S', '3987', 'w', '2855', '4331', 'N', 'T', '2717', '6599', 'O', '4187', 'Y', 'I', 's', 'B', 8305, 'l'], [7309, 9177, 't', 3921, 'Y', 4123, 7209, 8575, 't', 'Y', 3903, 'Q', 'b', 8983, 'J', 'y', 4387, 'k', '8809', 'c', 'd', '2767', '2477', '7853', '2535', 'o', 'B', 'S', '3987', 'w', '2855', '4331', 'N', 'T', '2717', '6599', 'O', '4187', 'B', 'b', 1443, 'U', 'O', 'E', 'R', 'b']