In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 175, 4733, 'U', 8445, 3531, 4035, 8493, 9081, 'u', 'U', 8457, 'N', 133, 'p', 9753, '5311', 'w', '6143', '2019', 'd', '6731', '8975', '3813', '8485', 'f', 'p', '1251', 'a', '3103', '1571', 'a', 'X', '779', 'U', '7793', 'e', 9635, 1617, 'v', 4733, 6359, 6849, 1187, 6961, 3409, 1329], ['M', 6041, 8209, '5311', 'w', '6143', '2019', 'd', '6731', '8975', '3813', '8485', 'f', 'p', '1251', 'a', '3103', '1571', 'a', 'X', '779', 'U', '7793', 'H', 5141, 3217, 7513, 2283, 7487, 1929, 563, 'o', 8013, 8877]