In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['b', 3045, 8909, 'F', 'g', 6851, 2941, 7565, 'a', 933, 'z', 'Y', 'Y', '8055', '4663', '4235', '631', '2435', '6573', 'R', 'x', '1205', 'y', '5271', '6781', '3395', 'o', 'N', 'G', 'I', 'x', 's', 'u', 'r', 'P', 6871, 'I', 1331], [9471, 9675, 9005, 'N', 4133, 'z', 'Y', 'Y', '8055', '4663', '4235', '631', '2435', '6573', 'R', 'x', '1205', 'y', '5271', '6781', '3395', 'o', 'N', 'G', 'I', 't', 'S', 3359, 6551, 3743, 'N', 9121, 7963, 'v', 5847, 'U', 'v', 'Z', 4867, 3995, 6675, 't']