In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['I', 3231, 8707, 'U', 'S', 8595, 921, 2213, 'F', 's', '8431', '8233', '1781', '553', 'c', '7967', '5017', 'J', 'B', 'K', 'W', 'K', 'd', '4531', 'G', '8161', '1793', '4251', '9465', '1319', '4133', '917', 'k', '9453', 'g', 5471, 'X', 'c', 8561, 'F', 5125, 'L', 7671, 295, 9909, 7349, 'q', 9051, 'S', 5803, 'r', 'B', 'E', 2653, 'r', 'W', 'L', 'A', 3051], [8807, 6805, 6929, 'e', 5209, 9179, 'u', 69, 'X', 'w', 's', '8431', '8233', '1781', '553', 'c', '7967', '5017', 'J', 'B', 'K', 'W', 'K', 'd', '4531', 'G', '8161', '1793', '4251', '9465', '1319', '4133', '917', 'k', '9453', 'o', 'N', 7775, 1785, 7681, 'W', 'l', 4667, 1489, 1039, 'E', 'j', 'g', 'm', 1501, 5323, 'q', 6949, 9265, 3061, 2625, 'w', 4651]