In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['c', 7639, 3107, 'Y', 8829, 6745, 'W', 2791, 'z', 'm', 'J', 2175, 'V', 'j', '6021', 'v', '1475', 'S', '473', 'a', 'P', 'Y', 'z', 'E', 'L', '3905', 'o', 'W', 4341, 'x', 'L'], ['e', 'g', 4347, 'A', 3765, 'g', 'j', '6021', 'v', '1475', 'S', '473', 'a', 'P', 'Y', 'z', 'E', 'L', '3905', 'o', 'J', 'z', 'm', 3477, 6095, 'q', 7553, 1743]