In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6269, 'h', 'I', 'v', 9673, 'L', 'h', 'k', 'k', '8327', 'J', 'e', '5425', '4419', 'k', '7311', 't', '1381', '9559', 'j', 'm', 'F', 'l', '3627', 'U', 'j', 'b', 'D', 'Q'], ['q', 7355, 7851, 'N', 'j', 'h', 'k', 'k', '8327', 'J', 'e', '5425', '4419', 'k', '7311', 't', '1381', '9559', 'j', 'm', 'F', 'l', '3627', 'U', 'j', 'Q', 3575, 'o', 'y', 'i', 'X', 8509, 'L', 6215, 6043, 'D', 'J', 7949, 'Y', 'e', 7639]