In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7675, 6429, 'Y', 'J', '6533', 'o', '47', '6333', 'W', 'J'], [6609, 2621, '6533', 'o', '47', '6333', 'm', 'k', 2605, 'd']