In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6707, 4665, 1297, 6061, 'y', 3289, 'e', '237', '7323', '7497', '643', '6877', '8967', 'z', 'l', '169', 'k', '5625', 'D', '1005', 'B', '3261', 'b', 2623, 'w', 7747, 803, 6937, 'U', 2293, 'w', 5115], ['i', 'r', 'O', 8029, 'h', 'S', 'S', 'A', 'n', 'I', 4249, 4905, '237', '7323', '7497', '643', '6877', '8967', 'z', 'l', '169', 'k', '5625', 'D', '1005', 'B', '3261', 'v', 8901, 6891, 'F', 4307, 6073, 'G', 4079, 2601, 'b', 'b', 'Z', 3527, 'b', 'U']