In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8893, 7651, 'T', 'g', '6703', 'M', 'F', 'Q', 'm', '2731', 'Y', '5819', '3933', 'E', 'C', 'u', 'a', 'x', 1605, 'L', 'b'], [7397, 4199, 'g', '6703', 'M', 'F', 'Q', 'm', '2731', 'Y', '5819', '3933', 'E', 'C', 'u', 'S', 'c', 'Y', 'Z', 'S', 1235, 'v', 'I', 's']