In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[5473, 'N', 7657, 213, 3467, 'y', 471, 'E', 'o', '4701', 'H', 'H', 'p', 'I', 'N', '8481', '7575', 'I', '9771', '1695', 'b', '6537', 'H', 'c', 2185, 1997, 'm'], [4767, 8037, 'H', 3613, 3643, 'N', 'f', 3795, 'k', 9059, 'w', 1435, 9897, '4701', 'H', 'H', 'p', 'I', 'N', '8481', '7575', 'I', '9771', '1695', 'b', '6537', 'H', 'q', 9417, 9925, 'U', 'B', 9851, 'A', 'X', 7167, 'q', 'N']