In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4971, 5445, 'W', '8205', 'W', '6711', '3699', 'p', '5683', 'i', '8467', '3773', '9411', 'J', 'p', '3947', '6665', 'D', 'e', '8963', 'c', 'y', '433', 'e', '1431', 'd', '5803', '7343', '9325', '7291', 'p', 8615, 9625, 2433, 'q', 6861, 9625, 4411, 'T', 'y', 'j', 8021, 5061, 'Z', 225, 2359, 4735, 3699, 375, 'K', 'D', 'c', 3211, 5107, 'W'], [2475, 'k', 'Z', 1825, 9695, 's', 'Y', 2203, 'A', 'F', 3591, 8921, 'U', 'B', 5101, 8623, 'P', 4953, 8439, 'd', 3899, 1681, 4299, 'W', '8205', 'W', '6711', '3699', 'p', '5683', 'i', '8467', '3773', '9411', 'J', 'p', '3947', '6665', 'D', 'e', '8963', 'c', 'y', '433', 'e', '1431', 'd', '5803', '7343', '9325', '7291', 'i', 1347, 7575, 873, 'j', 'D', 4311, 'Q', 'r', 'g', 'F', 967, 'L', 'r', 's', 'p', 4963]