In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['b', 'N', 'O', 'C', 'l', 'B', '9069', '3711', '8703', '8677', '4651', '1699', 'I', 'm', '3969', '6219', 'W', '8583', '2693', 'Y', 'b', 's', 1341, 5657, 'P', 1779, 'Z', 'b', 4519, 6227, 3981, 'r', 1323, 'w', 'F', 885, 'y'], ['g', 'v', 'l', 'B', '9069', '3711', '8703', '8677', '4651', '1699', 'I', 'm', '3969', '6219', 'W', '8583', '2693', 'Y', 'b', 'e', 3235, 'H', 3697, 'Y', 'P', 2527, 4123, 8317, 4709, 'z']