In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['z', 1707, 'a', 'h', 'p', 4377, 7225, 'q', 8919, 6113, 'I', 1399, 7369, 'a', 'J', 'r', 'O', 'y', 'm', 4213, 7755, 'f', 'W', 9005, 3809, '2049', '1683', 'p', 'K', '6073', '47', 'a', 'c', '4489', '2999', 'L', 'M', '5567', 'r', '297', 'F', 'n', '3247', 'K', '1611', '6569', 'm', 'I', 'K', 'r', '8869', 'T', 'h', '3279', 'b', 8443, 9431, 'P', 'C', 'H', 's', 6067, 'u', 'p', 5899, 2091, 2315, 8271, 8001], [6253, 'j', 'X', 1785, 'd', 'x', 'b', 63, 4243, 5489, '2049', '1683', 'p', 'K', '6073', '47', 'a', 'c', '4489', '2999', 'L', 'M', '5567', 'r', '297', 'F', 'n', '3247', 'K', '1611', '6569', 'm', 'I', 'K', 'r', '8869', 'T', 'h', '3279', 'r', 'V', 'N', 7031, 'M', 3059]