In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['s', 5961, 'F', 6419, 7317, 2921, 'K', 3199, 2351, 9853, 4811, 3231, '5953', '1493', '173', '425', 'O', 'L', '9941', 'J', 'p', '1999', '9613', '4401', '1875', 'F', 'i', '7537', '8471', '1193', 'Q', 7059, 6673], ['Z', 2529, '5953', '1493', '173', '425', 'O', 'L', '9941', 'J', 'p', '1999', '9613', '4401', '1875', 'F', 'i', '7537', '8471', '1193', 'x', 825, 'e', 'I', 'G', 'n', 2345]