In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['E', 901, 'F', 343, 5399, 6039, 'h', 5033, 1129, 'G', '3153', '1161', 'C', '4029', 'Z', '4517', '4473', 'b', 'k', '9499', '9899', 'g', 'S', 'K', 'f', 'F', 'j', 'O', 'Z', 'Z'], [8851, 'A', 'G', '3153', '1161', 'C', '4029', 'Z', '4517', '4473', 'b', 'k', '9499', '9899', 'Z', 'Z', 9415, 'D', 'b', 7991, 2819]