In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6253, 4417, 7319, 'r', 'R', 'r', '6803', '7093', 'v', 'R', '8201', 'y', 'H', 5393], [8917, 'a', 4791, 'r', '6803', '7093', 'v', 'R', '8201', 'y', 'W', 7365, 8117, 'J']