In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6449, 6111, 'V', 4313, 6891, 'v', 2233, 8999, 's', 'y', 'M', 7559, 'K', 'R', 9661, 'C', '1029', 'y', '4251', '5429', '10027', '9587', '3739', 'h', '8893', 'x', '2763', '2389', 'V', '7051', 'e', '9519', 'y', 'N', 'R', 'h', '9289', '7937', 'U', 'v', 'd', 4267, 765, 'd', 'U', 679, 'y', 'B', 2283, 4513, 'w', 631, 'A'], [7771, 2803, 9219, 7633, 'z', 'M', 6231, 'D', 'M', 'h', 8513, 5825, 'f', 'N', 'y', 5081, 'C', '1029', 'y', '4251', '5429', '10027', '9587', '3739', 'h', '8893', 'x', '2763', '2389', 'V', '7051', 'e', '9519', 'y', 'N', 'R', 'h', '9289', '7937', 'U', 'v', 'b', 2793, 5803, 's', 5461, 'b', 6571, 'G', 's', 2407]