In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['C', 'Y', 1027, '455', '5993', 'J', '5453', '3625', '9823', 'N', '1821', '4735', 'q', '193', '357', '6165', '4787', 'l', 'B', 'P', '309', '4699', 'p', '4097', '6891', 'G', '7831', '2093', '7323', 'C', 'G', 3411, 'Z', 'c', 'k', 7137, 'B', 'P'], [7903, 'l', 2511, 4057, 'B', '455', '5993', 'J', '5453', '3625', '9823', 'N', '1821', '4735', 'q', '193', '357', '6165', '4787', 'l', 'B', 'P', '309', '4699', 'p', '4097', '6891', 'G', '7831', '2093', '7323', 'C', 'M', 2561, 9463, 'j', 'I', 'N', 4217, 3881, 'n', 'T', 'X', 7085, 'h', 'E', 'K', 'm', 8197, 'd', 't', 7539, 1595, 5107]