In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7911, 7729, 'W', 'N', 'd', 7421, 'T', '4433', '3899', '1777', '1655', '7453', 'Z', 'z', 'N', 'N', 'j', 9189, 2411, 2079], ['L', 't', 'O', 2151, 'J', 'K', 'T', '4433', '3899', '1777', '1655', '7453', 'Z', 'j', 9153, 1587, 6287, 267, 'r', 2319]