In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[251, 'c', 1331, 'L', 'L', 9053, 9483, 'k', 'N', 'p', 1151, 899, '6763', 'z', '8137', 'r', 'q', 'Z', 'n', 'j', '4485', 'A', '3783', 'u', 'N', 'U', '7363', 'W', '5293', '1079', '9783', '3607', '1251', 'h', 'l', 'J', 2325, 4817, 9673, 4207, 'j', 9805, 'E', 303, 2477, 'c'], [6457, 9339, 'Y', 'a', 'Q', 7923, 'y', 1999, 'A', 'P', 8251, 8191, 2863, 5969, 5351, 7183, 2273, 'b', 5179, 783, 'E', '6763', 'z', '8137', 'r', 'q', 'Z', 'n', 'j', '4485', 'A', '3783', 'u', 'N', 'U', '7363', 'W', '5293', '1079', '9783', '3607', '1251', 'W', 'K', 'G']