In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.

Example input: [5797, 8817, '8297', 'b', 'U', 'b'], [5843, 8809, '8297', 'b', 'W', 'C']
Example output: 8297, b
Example explanation: Here, '8297, b' is the longest common subsequence in both the input lists [5797, 8817, '8297', 'b', 'U', 'b'] and [5843, 8809, '8297', 'b', 'W', 'C'].
Q: ['n', 7753, '1177', 'u', 'I', 'h', 'a', 3685, 'm'], [575, 9807, 8113, 5517, '1177', 'u', 'I', 'h', 'S', 2165, 8881, 'v']
A:
1177, u, I, h