In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6469, 'C', 'l', 'P', '4587', '8851', 'G', 'O', 's', '457', '4353', 'c', '327', '7503', 'B', 'J', 'G', 'Z', '6497', '3163', 'E', 'Y', '2171', '3325', 'D', '7601', 'P', 'E'], ['P', 5863, 'T', 95, 1171, 'v', 7033, 9093, 9651, 7231, 'e', 1585, 3943, 9515, 6129, 5437, 1461, 'm', 9879, 'i', 'P', '4587', '8851', 'G', 'O', 's', '457', '4353', 'c', '327', '7503', 'B', 'J', 'G', 'Z', '6497', '3163', 'E', 'Y', '2171', '3325', 'D', '7601', 'e', 1675, 5649, 'V', 8621, 4239, 'l', 6429]