In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['r', 7501, 'm', 'M', 9401, 'w', 'I', 'l', 1003, '3237', '7703', 'K', '9143', '5353', 'a', '7443', 'h', '6561', 'U', '8447', '7137', 'Q', '533', 'u', 'F', '6253', 'j', 5049], [1083, 'B', 9655, 'u', 4381, 3719, 'Q', 5875, 1597, 'Q', 'N', 2043, 'K', '3237', '7703', 'K', '9143', '5353', 'a', '7443', 'h', '6561', 'U', '8447', '7137', 'Q', '533', 'u', 'F', '6253', 'c', 'P', 'q', 3609, 'T', 'd', 'q', 9179]