In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['F', 1847, 'Q', 3463, 7237, 'Z', 'p', 'O', 't', 8391, 'L', 'p', '2481', 'C', 'q', 'q', 'o', '4957', '1919', 'A', '9571', '7707', '2639', 'A', 'g', 'b', 371, 'W'], [381, 9367, 'g', 'E', 'a', 'Y', 'n', 6421, 2799, 'T', 'A', 'L', 'p', '2481', 'C', 'q', 'q', 'o', '4957', '1919', 'A', '9571', '7707', '2639', 'A', 'g', 'J', 1913, 6217, 7211, 5265, 't', 'x', 'q', 'e', 'I', 4323, 2513, 'x', 2703, 683]