In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9955, 3509, 3061, 'b', 8167, 'L', 7121, 'W', 'p', 'C', 'I', '5873', '7421', 'O', '6175', 'z', '2829', 'G', 2219, 1491, 7169, 'F', 'm', 2351, 1483, 605], [5275, 'i', 'g', 1181, 'u', 'Z', 'u', 3753, 'p', 'W', 'p', 'C', 'I', '5873', '7421', 'O', '6175', 'z', '2829', 'y', 'D', 1097]