In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1063, 'L', 'm', 'i', 'P', '2443', 'L', '2699', 'I', 'b', 'v', 'q'], [4481, 'a', 769, 'm', 'i', 'P', '2443', 'L', '2699', 'I', 'M', 'S', 6539, 'j']