In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6571, 'S', '4103', '3473', 'n', '4143', '6973', 'k', 'u', 'p', '7113', 'o', 'V', 'z', 'F', '7325', '9823', 's', '3581', '2495', 't', 'r', 'S', '6573', 'O', 'v', 's', 'X', 'x', 8927, 843, 6125, 5359, 2587, 4305, 'r', 1213, 3573, 'k', 'i'], ['G', 'u', 9713, 7817, 'O', 10017, 10027, 'v', 'P', 'n', 6405, '4103', '3473', 'n', '4143', '6973', 'k', 'u', 'p', '7113', 'o', 'V', 'z', 'F', '7325', '9823', 's', '3581', '2495', 't', 'r', 'S', '6573', 'O', 'v', 'A', 1627, 'X', 'q', 'z', 'v', 'f', 'e', 'L', 'Z', 'T', 'Q', 'L', 't', 'y', 'X', 'u', 6483, 'l', 'y']