In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4681, 'V', 'B', 'l', '5525', '7911', 'm', '5015', 'b', '6631', '8499', 'W', 'R', '1785', '6023', '1727', '7593', 'Y', 'a', 'M', 'D', 'C', 'c', '4641', 'p', 3799, 'l', 'T', 3539, 'U', 2305], [1449, 7835, 'Z', 7345, 'u', 'd', 'l', '5525', '7911', 'm', '5015', 'b', '6631', '8499', 'W', 'R', '1785', '6023', '1727', '7593', 'Y', 'a', 'M', 'D', 'C', 'c', '4641', 'X', 7375, 7633, 4129, 8019, 'r', 7627, 915, 3787, 4313, 9609, 4525, 'C', 'Q', 'F', 7411, 1789, 1943, 4127, 'E', 'z']