In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[737, 'z', 4401, 6317, 't', 'B', 3815, 'm', 'G', '8709', '4749', 'J', '8885', 'k', 'Y', '3083', 'X', '8267', 'T', 'A', 'A', '7049', '6681', '6111', 's', 't', 'h', 1687, 'T', 'O', 'A', 'r', 'U', 6703, 'u', 'm', 1571, 'J', 2289, 8279], [5617, 'D', 'p', '8709', '4749', 'J', '8885', 'k', 'Y', '3083', 'X', '8267', 'T', 'A', 'A', '7049', '6681', '6111', 's', 'n', 5571, 8277, 'D', 1885, 7949, 3767, 'o', 'K', 5755, 'v', 9117, 's', 'b']