In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6681, 7753, 1257, 'd', 1869, 'a', 'C', 'F', '4029', '7207', 't', 'A', 'R', '8399', '8937', '3643', 'o', 'y', 4355, 3199, 9499], ['q', 6213, 'l', 'C', 8457, 8017, 9589, '4029', '7207', 't', 'A', 'R', '8399', '8937', '3643', 'o', 'd', 8701, 1391, 7083]