In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['I', 'q', 7903, 'F', 5797, 'x', 3009, 'D', 'e', 'L', 2701, 3685, 'R', 'X', 2621, 'A', 'M', 'f', 1659, 's', '5231', 'q', '4131', 'n', '4551', 'h', 'Z', '3325', 'i', 'n', '2829', '1891', 'n', 'c', '5823', '451', '2527', '9353', 'I', '3541', '1777', '5765', 'S', 'D', 'x', '5213', 'l', '865', 'U', 'N', 'S', 'T'], [2665, 'u', 1055, 'u', 'C', 'T', 'd', 3921, '5231', 'q', '4131', 'n', '4551', 'h', 'Z', '3325', 'i', 'n', '2829', '1891', 'n', 'c', '5823', '451', '2527', '9353', 'I', '3541', '1777', '5765', 'S', 'D', 'x', '5213', 'l', '865', 'U', 'N', 'P', 'I', 'N', 6701, 'h', 'I', 3713, 'Y', 8991, 'u', 8645, 2823, 8813, 'a', 3905, 3883, 5795, 5611, 7619, 'Q', 9651, 'T', 'u', 1421, 8933, 'm', 4325, 9557, 5421]