Given the task definition and input, reply with output. In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.

[4061, 1529, 'a', 'L', 'F', 'n', '3643', 'S', 9817, 'G', 'T'], [4683, 'd', 'V', 'a', 'L', 'F', 'n', '3643', 2037, 3873, 4119, 6985, 'y']

a, L, F, n, 3643