In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['T', 393, 8901, 'v', '7629', 'F', 'u', 'k', 'W', 8907, 'h', 2541], [7631, 'q', 'L', 'k', 'E', 'v', '7629', 'F', 'u', 'k', 'L', 'T', 1767, 6521, 4659]