In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['K', 't', 'B', '9019', '1149', 'T', 'M', 'n', '4459', '5895', 's', 4605, 8547], ['w', 7701, '9019', '1149', 'T', 'M', 'n', '4459', '5895', 'O', 'H', 'n', 1317, 8885]