In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4739, 'b', '3909', '195', '4001', '8621', 'z', '5501', '1921', 'z', '9357', 'E', '7209', 'W', 'j', '5789', 'E', '8087', '1801', '8535', '2355', '4637', 'q', 'B', 4365, 5221, 'c', 'i', 't', 't', 'h', 'T', 6747, 2631, 5793], ['M', 2999, 9739, 'U', 'G', 'R', 'm', 2527, 'C', 'k', 8959, 5235, 4929, 8921, 'E', 'u', 'N', '3909', '195', '4001', '8621', 'z', '5501', '1921', 'z', '9357', 'E', '7209', 'W', 'j', '5789', 'E', '8087', '1801', '8535', '2355', '4637', 'k', 9101, 4669, 5107, 'Y', 'T', 4737, 8755]