In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6389, 1455, 'a', 'a', 1827, 'Q', '5483', 'l', 'n', 'l', 'A', 9199, 2397, 'F', 'K'], ['J', 'T', 'Q', '5483', 'l', 'n', 'l', 'q', 's', 'W']