In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6811, 8603, 9447, 'V', 's', 'q', 'e', 'x', 9129, 'W', 'Y', '1005', '7413', 'D', 'B', '1467', 'H', 'X', 'd', '9665', '7177', '8051', 'E', '1837', 'm', 9399, 9273, 'C', 881], [8793, 'C', 4319, 4769, 'W', 'G', 7065, 4317, 'Y', '1005', '7413', 'D', 'B', '1467', 'H', 'X', 'd', '9665', '7177', '8051', 'E', '1837', 'q', 7949, 'g', 9309, 'p', 2151, 9001, 3835, 'j', 'p', 'T', 'T', 3709, 'm']