In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['P', 'x', 'Q', '4063', 'k', '449', 'M', '7689', 's', 7519, 'T', 2433, 9605], [5801, 7033, 'b', '4063', 'k', '449', 'M', '7689', 'H', 'h']