In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1117, 'q', 'K', 's', 3111, '9495', 'G', '9181', 'r', '5143', '5553', 'r', '7041', '8861', 'w', '7223', 'J', 4395, 645, 'l', 8851, 9793], [6975, 321, 5243, 3635, 'P', 's', 2651, 'x', 9887, 8443, '9495', 'G', '9181', 'r', '5143', '5553', 'r', '7041', '8861', 'w', '7223', 'f', 'R', 5419, 2163, 'T', 9091, 1911, 'k']