In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['L', 's', 1907, '9309', '981', '8779', '8175', '5083', '2945', '2737', '1615', '6803', '9675', 'h', 'K', 'A', 6017, 'l', 3605, 'J', 8779, 'V', 5845, 2603, 'n', 'm'], ['n', 9039, '9309', '981', '8779', '8175', '5083', '2945', '2737', '1615', '6803', '9675', 'h', 'K', 'Y', 'o', 6013, 'H', 465, 'F', 9717, 1521, 'h', 'Y']