In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['L', 'h', 2073, 'O', 'G', 'M', 6841, 8301, 'H', 'q', '5303', 'o', '7787', 'G', 'm', 'G', 'z', '7517', 'f', '3307', '8447', 'n', 'd', 'm', '3427', '4555', 'b', '8527', 'A', 'u', 'u'], [7617, 'z', 4955, 35, 'X', 'I', 'Q', 'M', 'D', 9663, 'g', 'q', 't', 'j', 'q', 705, 761, 'u', 'H', 'q', '5303', 'o', '7787', 'G', 'm', 'G', 'z', '7517', 'f', '3307', '8447', 'n', 'd', 'm', '3427', '4555', 'b', '8527', 'A', 'h', 's', 7591, 'j', 403, 'z', 643, 'i', 6841, 'Y', 's', 'Y']