In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 8237, 7255, 'm', 1545, '1271', 'i', 'H', 'u', '4019', 'w', 8889], ['T', 541, 939, 9057, '1271', 'i', 'H', 'u', '4019', 'e', 9045, 'e', 773]