In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['S', 4443, 4087, 8941, 9841, 9541, 'b', 8403, 'y', 'a', 'b', '6959', '9333', 'p', '7059', 'Y', 'p', 'E', '1987', '9793', 'G', 'r', 'P', 'y', '6055', '687', 'q', 'a', '683', 'N', 'G', '6371', '1637', '5283', 'H', '6095', 'f', '7585', 'u', 885, 4449, 6789, 541, 4107, 4877, 'd', 521, 'P', 'e', 'L', 'J', 1483, 'y'], ['r', 'o', 'b', '6959', '9333', 'p', '7059', 'Y', 'p', 'E', '1987', '9793', 'G', 'r', 'P', 'y', '6055', '687', 'q', 'a', '683', 'N', 'G', '6371', '1637', '5283', 'H', '6095', 'f', '7585', 'Y', 4921, 4549, 'X', 'f', 'C', 'i', 'X', 9963, 8983, 8917, 'n', 2711, 9675, 'v', 'N', 'q', 'j', 1605, 'v']