In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[5517, 6687, 8049, '9703', '3737', 'X', 'L', '5953', '4159', 'Q', 'L', 'W', '5767', '7851', '9497', '7443', '2931', '5431', '8985', '1901', 'i', 'o', 357, 'B', 'q', 'U', 'u', 'b', 'H', 5735, 'r'], ['q', 'Y', 'g', 'H', 1481, 'Q', 'H', 1721, 'a', 9533, 3327, 'B', 'd', 'Q', 'Y', '9703', '3737', 'X', 'L', '5953', '4159', 'Q', 'L', 'W', '5767', '7851', '9497', '7443', '2931', '5431', '8985', '1901', 'Y', 'Z', 1399, 6099, 'A', 5365, 'N', 4553, 'e', 'J', 'F', 5943, 'd', 3905, 'G']