In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7411, 909, 'V', '2469', '3341', 'x', '2309', '8223', 's', '3603', 'T', '4301', 's', 'A', '2169', '2651', 'W', '8265', 'k', 'S', 't', '7775', '2005', 'K', '963', '7733', '8363', 'c', 'U', '6289', '4061', 'm', 'f', 'Q', 7575, 7907, 2149, 6891, 9507, 9269, 5875, 'M', 'N', 4677, 2065, 3965, 2087, 'y', 1675, 'Z', 4509, 5635, 't', 7485, 'U', 'Q'], [6937, 7509, 9263, 'g', 'S', 'w', 8373, 'X', 'J', 'y', 'W', 'h', 'v', 2811, 'k', 'J', 3075, 3771, 8061, '2469', '3341', 'x', '2309', '8223', 's', '3603', 'T', '4301', 's', 'A', '2169', '2651', 'W', '8265', 'k', 'S', 't', '7775', '2005', 'K', '963', '7733', '8363', 'c', 'U', '6289', '4061', 'N', 'U', 9967, 1357, 'J', 'r', 'W', 'X', 8245]