In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['C', 'x', 'U', 2133, '4901', '9225', '4455', '9551', '5837', '3677', 'u', 9629, 7303], [8977, 'o', 9401, '4901', '9225', '4455', '9551', '5837', '3677', 'J', 8843]