In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['L', 'B', 5101, 1943, 'N', '8943', 'q', '2657', 'k', 'u', 1925, 'S', 1213, 5847], [4275, 3981, 'n', 'w', 1357, 'N', '8943', 'q', '2657', 'k', 'K', 7357]