In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['a', 'S', 'f', 7597, 8985, 2565, 3695, 4605, 'M', 7447, 'D', 's', 'u', 'b', 'C', 'N', 'G', '2909', '5403', 'k', '6713', '8963', '4603', '4993', 'X', '5099', 'm', '3741', 'f', '1521', 'A', 'g', '4583', 'N', 'v', 'e', 'R', '7711', 'h', 'G', '5823', 'U', 'j', '5831', '2107', 'J', 3491, 'T', 'H'], ['C', 'H', 3379, 2053, 4517, 4117, 'T', 'P', 'c', 4367, 1891, 't', 9221, 'N', 'G', '2909', '5403', 'k', '6713', '8963', '4603', '4993', 'X', '5099', 'm', '3741', 'f', '1521', 'A', 'g', '4583', 'N', 'v', 'e', 'R', '7711', 'h', 'G', '5823', 'U', 'j', '5831', '2107', 'F', 'w', 'x', 5191, 2995, 2841, 33]