In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Y', 6811, '2379', 'i', 'Y', 'G', '3529', '9449', 'u', 'Z', 'S', '6949', 'r', '5467', '893', 'w', 415, 'N', 6365, 3353, 'C', 'P', 1945, 'P', 'H', 'R', 7761, 9231], [6253, 'Q', 'U', 9895, 'P', 'L', 'g', 8165, 5653, 'w', '2379', 'i', 'Y', 'G', '3529', '9449', 'u', 'Z', 'S', '6949', 'r', '5467', '893', 'P', 'd', 4917, 'v', 's', 'L', 1205, 'd', 4213]