In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7969, 7833, 9069, 'l', 'N', 7935, 7821, 'y', 'q', 'r', 'G', 'O', 'w', 'n', 'h', 'j', 'X', '9705', 'U', '7943', 'K', 'r', '4841', '2141', 'd', '2007', 'O', '5005', 'b', '7367', 'T', 'C', 't', '6865', 'Y', '1263', 'M', 'c', 'u', 5133, 'x', 117, 5841, 'd', 'z', 'A', 3299, 'O', 'W', 'E', 'Q', 8547, 'w', 5235, 9011], [2305, 'g', 'Y', 'v', 6105, 'm', 6457, 2715, 'b', 7811, 3401, 'H', 'h', 'j', 'X', '9705', 'U', '7943', 'K', 'r', '4841', '2141', 'd', '2007', 'O', '5005', 'b', '7367', 'T', 'C', 't', '6865', 'Y', '1263', 'K', 'Z']