In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6211, 6663, 9259, 8989, 'Q', '3775', '8201', '6991', 'w', 'U', 'F', 'v', '7687', '977', 's', 'B', '113', '4345', 'G', 'U', 'B', 9773, 'L', 4979], [6527, 'm', 'e', 6041, 7249, 4575, 'M', 9053, 4993, 3435, 'Q', '3775', '8201', '6991', 'w', 'U', 'F', 'v', '7687', '977', 's', 'B', '113', '4345', 'G', 'U', 'c', 'b', 4241, 'S', 'n', 'r', 5089, 'U', 6909]