In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7155, 'R', 5819, 'a', 'C', 4603, 1003, 'W', 'N', 'Z', 'q', 'A', 'w', 'r', 'N', '6611', 'r', '8975', 'b', 'T', 'c', 2763, 'W', 'n', 7521, 4855, 9907, 'o', 'C', 1185, 'g'], [9921, 55, 5361, 'k', 'N', 'Z', 'q', 'A', 'w', 'r', 'N', '6611', 'r', '8975', 'b', 'T', 'h', 8665, 'O', 633]