In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3933, 8481, 'u', 'o', 'c', 'Q', '7169', 'd', 'P', 6843, 4251], [8105, 2781, 'i', 'o', 'c', 'Q', '7169', 'F', 'n', 2799, 'J']