In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['S', 6971, 'y', 'u', 107, 6439, 'z', 'P', 'G', 8899, 'Y', 9955, 'V', 'G', 2287, 873, 3233, 'O', 9215, 737, 'J', 2299, 'A', 'S', 'M', 'C', 2099, '4415', '2419', '1599', 'b', '4069', '3075', 'K', '3793', '1849', 'B', '5661', '7963', '9093', '2763', '3321', '5937', 's', 'Q', '3473', 'U', 'I', 'h', 'y', 'A', 'i', 'E', '4239', '5649', '7699', '6421', 'u', 'u', 'c', 'Q', 4825, 'g', 'w', 'y', 'q', 'J', 7761, 2599, 4193, 'I', 8821, 'C', 9677, 'J', 985, 'W', 8161, 8611, 'S'], [1745, 3017, 7711, 967, 'u', 6287, 'B', '4415', '2419', '1599', 'b', '4069', '3075', 'K', '3793', '1849', 'B', '5661', '7963', '9093', '2763', '3321', '5937', 's', 'Q', '3473', 'U', 'I', 'h', 'y', 'A', 'i', 'E', '4239', '5649', '7699', '6421', 'D', 'j', 'w', 'o', 'L', 3037, 2621, 9901, 7151, 2577, 'Q', 'K']