In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[951, 8137, 'X', 'T', 'Z', '1003', '5445', 'X', '2255', 'y', '4919', 'F', 9341], ['c', 6519, 'n', 'Z', '1003', '5445', 'X', '2255', 'y', '4919', 'b', 'd', 'A']