In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3903, 9099, 7633, 'B', 'g', 'T', '219', '1249', 'u', 3329, 7395, 1031], [8961, 'V', 8559, 's', 'V', 'B', 'g', 'T', '219', '1249', 'v', 8809]