In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6291, 4241, 4183, 2715, 'r', '6815', 's', 'E', '9693', '9357', 'j', 'o', 'D', 'd', 4911], ['W', 6199, 'q', 'v', 'I', 'G', 'y', 'r', '6815', 's', 'E', '9693', '9357', 'j', 'c', 4563]