In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6319, 'U', 5277, 7459, 'T', 4723, 'l', '1179', '5307', 'U', '4247', 'a', '75', '1963', '437', '4539', 'o', 'K', 3351, 3913], ['c', 7153, 'J', 245, 417, 'm', 8381, '1179', '5307', 'U', '4247', 'a', '75', '1963', '437', '4539', 'O', 'F', 'O', 'l', 'v', 'a']