In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6261, 'X', 'U', 5141, 'g', 2867, 5117, 3231, 'k', '4247', 'v', 'v', '3851', '8885', 'e', '815', 'b', 't', '9907', '2635', 'E', '2399', '8421', 'f', 'T', 'a', '2185', 's', '5327', '7111', 'm', '8245', '4117', '5019', '5015', 'g', '9779', 'v', 427, 'S', 'e', 'v', 'C', 'G', 89, 501, 5169, 3379, 1385, 2667, 8197, 'G', 'u', 8745, 1241, 'f', 'K', 'G', 'q', 'g', 4455, 'E'], [2863, 3355, 'S', 't', 4495, 'Y', 'u', 'U', 'j', '4247', 'v', 'v', '3851', '8885', 'e', '815', 'b', 't', '9907', '2635', 'E', '2399', '8421', 'f', 'T', 'a', '2185', 's', '5327', '7111', 'm', '8245', '4117', '5019', '5015', 'g', '9779', 'e', 5075, 'D', 'v', 'z', 8977, 'S', 'L', 6647, 'c', 'T', 'p', 'b', 8853, 'c']