In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4571, 'J', 711, 'v', '9873', '6877', '7683', '7285', '5235', 'h', 9177, 'E', 's', 'B'], [3455, 5349, 'F', 'k', 'X', '9873', '6877', '7683', '7285', '5235', 'j', 4885, 'N', 'e', 'c']