In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4219, 6803, 7277, 569, 9819, 7179, 1897, '8893', '1577', 'n', '2605', 'U', 'l', 'X', '3731', 'M', 'w'], [4781, 'E', 5463, 'W', 3307, 'V', 3967, '8893', '1577', 'n', '2605', 'U', 'l', 'X', '3731', 'o', 2947, 'C', 'R', 6335, 'u']