In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['o', 'h', 'e', 'i', 6053, 'w', 'r', 'I', 'n', 's', 9345, 7409, 'C', '7873', '8401', '2779', '2119', '2079', '1823', '9039', 'i', '1233', '9923', 'U', '1569', 'I', '7679', 'f', 'U', 7983, 'H', 4815], [6287, 3111, 2953, 'Q', '7873', '8401', '2779', '2119', '2079', '1823', '9039', 'i', '1233', '9923', 'U', '1569', 'I', '7679', 'c', 'k', 7031, 'y', 1399, 'v', 7269]