In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['C', 8581, 'z', 9459, 'p', 'H', 'q', '1533', '1867', '1969', 'e', 'x', '1457', 'W', '6747', '8933', '2527', 'D', 2151, 3559], ['j', 4947, 4223, 7863, 'M', 'w', 5201, 'S', '1533', '1867', '1969', 'e', 'x', '1457', 'W', '6747', '8933', '2527', 'I', 'E', 'W']