In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['G', 8615, 'Z', 'y', '5453', '6027', '3471', 'Y', 'e', 'w', 6437, 8233], ['S', 8935, 'y', '5453', '6027', '3471', 'Y', 'C', 4547, 5993, 'o', 'W']