In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1221, 'r', 7453, 'V', '285', '3847', 'z', '1739', '6577', 'f', '3035', '7451', '8833', 'T', 'M', 'V', 2963, 4415, 'Y', 'l'], [2081, 9663, 'z', 'o', 7481, 1697, 149, 'J', 2707, '285', '3847', 'z', '1739', '6577', 'f', '3035', '7451', '8833', 'T', 'M', 'S', 3031, 'T', 'S', 9059, 6505, 9961, 6341, 'v', 'x', 'u']