In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2417, 3607, 'W', 'C', '8007', '6075', 'a', 'Y', '543', 'Q', '741', 's', 'f', '8047', '4085', 'e', '4889', '6759', 'a', 'f', 'C', 'S', '4721', '7355', '913', 'o', 'o', 'e', 'i', 'D', 'I', 'G', 'A', 'L', 6431], ['y', 'E', 8057, 659, 'Y', 'C', 6857, 3757, 'C', 'J', 9111, 'k', 'Q', 'P', 2399, 6075, 'D', 'I', 'j', 6197, 3083, 2263, 3561, 8121, 's', 'D', 5303, 'g', 'W', 'C', '8007', '6075', 'a', 'Y', '543', 'Q', '741', 's', 'f', '8047', '4085', 'e', '4889', '6759', 'a', 'f', 'C', 'S', '4721', '7355', '913', 'o', 'o', 'e', 'i', 'D', 'g', 1527, 7885, 'Y', 2137, 'H', 'D', 269, 'd', 'h', 'D', 'Q', 'Q', 'F']