In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['n', 'x', 8789, 'K', '6273', 'V', '4337', 'l', '4693', '9075', '5653', '1941', '4697', '4325', '3189', '1767', '8681', 'H', 421, 5605, 1285, 'V'], [8133, 2929, 'a', 'd', 'B', 593, 'k', 7019, 4789, 3629, 'G', 'v', '6273', 'V', '4337', 'l', '4693', '9075', '5653', '1941', '4697', '4325', '3189', '1767', '8681', 'J', 'X', 'k']