In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['K', 's', 2449, '857', 'Q', 's', 'K', 'N', '5865', 'x', 'j', 8453, 'E', 3825], ['g', 423, 4407, '857', 'Q', 's', 'K', 'N', '5865', 'x', 'E', 2101]