In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['I', 3653, 'I', 'm', 'n', '5247', 'W', '9277', 'i', 'M', 'S', '4441', 'g', 'E'], [523, 7757, 7101, 3393, 't', 'C', '5247', 'W', '9277', 'i', 'M', 'S', '4441', 'A', 2841, 'X']