In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['s', 'a', 'f', 'e', 'e', 'J', 8263, 'S', 'Y', 'x', 5759, 565, 'f', 2717, 'C', '8603', 'W', 'c', '7891', 'h', '3857', 'p', 'G', 'L', 'a', 'g', '955', '5653', '75', 'w', '8765', 'k', 'J', '5043', 'B', 'R', 'P'], [2173, 'l', 's', 3649, 'p', 21, 'd', 'O', 1945, 'f', 2709, 3773, 'E', 3481, 'D', 1191, 'C', '8603', 'W', 'c', '7891', 'h', '3857', 'p', 'G', 'L', 'a', 'g', '955', '5653', '75', 'w', '8765', 'k', 'J', '5043', 'B', 'q', 5143, 'p', 'e', 'v']