In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2803, 'l', 8379, 'r', 'b', 2363, 'P', 'K', 's', 3999, 't', 167, 'N', '9089', '4973', '7373', '8759', 'W', 'r', '6259', '9427', 'c', 'Q', '2311', '5829', 'O', '7913', '1539', 'r', 'e', 'd', '9025', 'M', 7681, 'e', 'm', 'a', 1365, 'm', 'm', 'v', 'P', 'M', 3649, 7257, 'q', 9843, 831, 'U', 'b'], ['A', 'm', 9121, 'h', 'p', 'k', 'P', 4077, 'd', 3595, 1689, 'D', 'C', 'l', 'I', 'Y', 'N', '9089', '4973', '7373', '8759', 'W', 'r', '6259', '9427', 'c', 'Q', '2311', '5829', 'O', '7913', '1539', 'r', 'e', 'd', '9025', 'K', 2849, 'i', 'K', 'N', 'u', 1811, 967, 2799, 'u', 'C', 637, 1911, 6151, 'L']