In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['k', 'j', 4485, 'p', 'O', 6327, 'N', 2319, 'Y', 1501, '1185', 'q', '3643', 'i', 'W', 'c', '8573', '239', 'Q', 'm', 'S', 'l', 'P', '9441', 'S', 2663, 't', 7337, 'U', 9649, 'u', 'v', 'H', 1913], [6881, 7841, 'C', 2245, 'W', 3357, 'i', 'q', 'A', 2101, 639, 'O', '1185', 'q', '3643', 'i', 'W', 'c', '8573', '239', 'Q', 'm', 'S', 'l', 'P', '9441', 'Z', 2327, 'M', 7339, 8657, 3803, 649, 'v', 1773, 8877, 'g', 'g', 1141, 1855]