In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7223, 6937, 'C', 8527, 'h', 'b', 8555, '9511', 'P', '4995', 'L', '5785', '5985', '5643', '6179', 'x', '8531', '5485', 'f', 'w', 'Y', '5797', 'e', 'm', 'F', 'S', '8085', 't', 6485, 'C', 7129, 8571, 's', 5539, 'r', 'u', 'z', 'M', 'd', 'c', 'k'], ['H', 'L', 9049, 'H', 345, 'J', 'L', 'J', 677, 'W', 'G', 8573, 'i', 'q', 8325, 'V', '9511', 'P', '4995', 'L', '5785', '5985', '5643', '6179', 'x', '8531', '5485', 'f', 'w', 'Y', '5797', 'e', 'm', 'F', 'S', '8085', 'b', 's', 'W', 4963, 'p', 7803, 'o', 'c', 'H', 9849]