In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7071, 3311, 4331, 'q', 's', 'Y', 'o', '249', '975', '8501', 'G', '4413', 'l', '2947', 'I', 'M', '13', '3589', 'a', 'M', '817', 'Q', '2303', '9935', 'c', 4109, 7057, 'h', 1017, 2177, 9729, 'm', 'k', 'm', 9107, 6613, 1923, 5909, 5729, 'p', 9011, 'f', 2607], [9111, 'v', 'B', 'i', 'E', 7559, 4125, 3173, 777, 't', 8727, 3285, 's', 'Y', 'o', '249', '975', '8501', 'G', '4413', 'l', '2947', 'I', 'M', '13', '3589', 'a', 'M', '817', 'Q', '2303', '9935', 'I', 'J', 7449, 'x', 'J', 'U', 'S', 'H', 'X', 'l']