In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2111, 8101, 'X', 'P', 6695, '8753', '4479', '1263', '2515', '8463', '7775', '9847', 's', 5733, 'A'], [8275, 'u', 1289, '8753', '4479', '1263', '2515', '8463', '7775', '9847', 'B', 3943, 6043, 'X', 'G', 'Y', 9919]