In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7005, 21, 'n', '3579', '9067', '3247', '2609', '6713', '8049', 'T', 'l', 2985, 'F', 8573], ['r', 'g', '3579', '9067', '3247', '2609', '6713', '8049', 'T', 'j', 'O', 't', 'k']