In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['t', 11, 8189, 6343, 9571, 'W', 179, 'L', 'm', 5603, 'X', 'f', 'r', '387', 'r', 'I', 'U', '845', '8073', '5067', 'L', '4877', '2549', '8145', '4967', 'L', 'K', 'i', 'g', 'C', 'F', 'B', 'L', 5697, 5031, 3595, 'h'], [7711, 7751, 'b', 'K', 8951, 5997, 'd', 'M', 115, 7891, 1815, 8851, 'Z', 'Y', 'r', '387', 'r', 'I', 'U', '845', '8073', '5067', 'L', '4877', '2549', '8145', '4967', 'L', 'E', 'J', 'H', 5005, 'n', 'N', 165, 5533, 'C', 3949, 'e', 'P', 'O']