In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['E', 'y', 'W', 5431, 'v', 1219, 'G', 8275, 4921, 's', 9919, 'V', 'L', '4165', '7639', 'y', 'c', '9817', '6647', '8671', '1499', '439', '9159', 'f', 'G', 453, 9873, 6381], [1017, 'T', 3425, 'd', 'S', 'P', 1611, 2389, 5771, 6145, 'L', '4165', '7639', 'y', 'c', '9817', '6647', '8671', '1499', '439', '9159', 'f', 'f', 'R', 8657, 'K', 97, 'A', 'c']