In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8903, 2705, 'l', 'c', 'F', 8099, 'R', 3069, 'v', 'r', '2195', 'f', 'S', 'X', 'O', '4933', 'v', '9551', 'Y', '9725', 'c', 'U', '9835', 't', 'X', 'i', 'C', 'I', 'K', '7429', '2053', '9511', '8817', 't', 'o', 'N', 'E', 'E', 6001, 'Q', 7515, 7299, 993, 'n', 'b'], [2789, 8087, 5243, 't', 'T', '2195', 'f', 'S', 'X', 'O', '4933', 'v', '9551', 'Y', '9725', 'c', 'U', '9835', 't', 'X', 'i', 'C', 'I', 'K', '7429', '2053', '9511', '8817', 'K', 1035, 'q', 3023, 'f', 4441, 't', 'z', 'x', 'n', 'U']