In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['i', 'P', 3057, 'u', 963, 'o', 6531, 'M', 6309, '7415', '9263', '6727', 'e', '7387', 'N', 'J', 'L', 'm', 'x', 'v', '7413', 'k', '3243', '1033', 'M', '9853', 'd', '3371', '165', '6457', 'I', 'h', 'N', 2615, 'C', 4709, 7615], [7309, 6331, 'B', 'G', 'P', 1333, 3481, 9247, 'a', 2567, 't', 'V', 'z', 3909, '7415', '9263', '6727', 'e', '7387', 'N', 'J', 'L', 'm', 'x', 'v', '7413', 'k', '3243', '1033', 'M', '9853', 'd', '3371', '165', '6457', 'I', 'v', 3167, 'A', 2565, 3723, 'n', 'C', 'c', 9825, 'J', 's', 'b', 'R']