In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4069, 669, 1113, '6895', 'T', 'E', 'P', '8339', 'L', 'b', 't', 2783, 1497, 407, 'L', 'R'], [865, 9005, 4065, 'b', 4411, '6895', 'T', 'E', 'P', '8339', 'L', 'b', 'H', 'C', 507, 'n']