In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2753, 4163, 5507, 'J', '3', '1599', '8949', '9223', 'z', '1157', 'I', 'Z', '8257', '2187', 'F', 'J', 'H', '9527', 'V', 'B', 'b', 'i', 'h', 'H'], [3907, 1525, 229, 'a', 6611, 'K', 5785, 5041, 'J', '3', '1599', '8949', '9223', 'z', '1157', 'I', 'Z', '8257', '2187', 'F', 'J', 'H', '9527', 'O', 9491, 'G', 4605]