In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['K', 'f', 'q', 7395, 'O', 'I', '1639', '4033', '7253', 'j', 'd', 'v', 'D', 'z', 7277], ['Q', 9979, 'd', 7409, 5259, 'O', 'I', '1639', '4033', '7253', 'j', 'T', 'q']