In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['s', 2995, 'n', 4103, '8495', 'l', 'j', '5043', '7589', '7233', 'd', '403', 'E', 9289, 'D'], [2339, 6857, '8495', 'l', 'j', '5043', '7589', '7233', 'd', '403', 'e', 7373, 'c', 'u', 2143, 2455, 'R']