In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4985, 'G', 453, 'I', 'H', 2137, 'S', 3783, 5643, 6195, 'L', 6123, 'f', 'A', 'o', 'm', 4737, 9887, 's', 9339, '1025', '1765', '2295', '9165', 'L', 'U', '9815', '1557', '1301', '7429', '8383', '6581', '4947', 'j', 'D', 'a', 'h', 'W', '3447', '883', 'U', 'e', 'Y', 'x', 5543, 'g', 'f', 'c', 1137, 3871, 'F', 'a', 9649, 6333, 5725, 'C', 'z', 'D', 's'], [1357, 7273, 1137, 'o', 3989, 1509, 'U', 4827, 'G', 9977, 'B', 6261, 'P', 5113, '1025', '1765', '2295', '9165', 'L', 'U', '9815', '1557', '1301', '7429', '8383', '6581', '4947', 'j', 'D', 'a', 'h', 'W', '3447', '883', 'V', 525, 2287, 4383, 'y', 'S', 1193, 's', 7561, 'R', 8783, 'Q', 'S', 'Y', 9879, 983, 'b', 'Q']