In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['q', 3715, 4981, 6405, 'x', 'H', 627, 847, 6393, 'g', 'E', 6455, 's', 3899, 'M', 5029, 9325, 685, 'f', 1137, '9445', '4997', 'l', '5555', '6901', '8119', 'u', '5447', 'S', 'y', '5469', '6375', '6915', '3315', '3773', 'M', '3465', 'S', '4555', '6671', 'k', 'd', 'r', '1361', '8615', 'i', 'y', 5283, 'A', 3577, 723, 'n', 2109, 7173, 6067, 3417, 4299, 185, 'Y', 6437, 1649, 'c', 'w', 6153, 4563], [6435, 'i', 6507, 'l', 241, 7785, 'y', 6341, 'Z', 'i', '9445', '4997', 'l', '5555', '6901', '8119', 'u', '5447', 'S', 'y', '5469', '6375', '6915', '3315', '3773', 'M', '3465', 'S', '4555', '6671', 'k', 'd', 'r', '1361', '8615', 'i', 'o', 6205, 3751, 7221, 'i', 'U', 4773]