In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['k', 'a', '3303', '2195', 'o', '2423', '631', '5153', '9381', 'e', 'h', '2993', '4941', 'I', 6331, 2327], [389, 2961, '3303', '2195', 'o', '2423', '631', '5153', '9381', 'e', 'h', '2993', '4941', 'x', 9541, 7725, 'r', 'f', 'q', 3029, 8081, 6075]