In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['c', 1269, 'P', '2351', 'd', '1789', '6107', '2605', 'v', 'j', 'v', 'C'], [779, 'Y', 1789, 'G', 'e', 7595, 'A', 'P', '2351', 'd', '1789', '6107', '2605', 'v', 'q', 1455, 2673]