In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['g', 'o', 1257, 'c', 'g', '3073', '4251', '4165', 'l', '9111', '4827', '7337', '7183', 'p', 9513, 1059, 909], [447, 1419, 'R', 'k', 'p', 'g', '3073', '4251', '4165', 'l', '9111', '4827', '7337', '7183', 'c', 'Q', 2133, 't']