In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[5331, 2127, 7837, 'i', 'P', 'R', 'A', 'y', 't', 'C', 'J', 'z', 'O', 'H', 'K', 'A', 'A', '7035', '1597', 'l', '123', '7317', '8397', '6459', 'n', 'k', 'C', 8867, 'n', 2009, 't', 'A', 'q', 7841, 'U', 'L', 5509, 'n', 'k', 117], ['w', 4465, 'T', 'J', 'z', 'O', 'H', 'K', 'A', 'A', '7035', '1597', 'l', '123', '7317', '8397', '6459', 'n', 'b', 'j', 4383, 6631, 'b', 'c']