In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7091, 't', 'U', '7009', '1333', '9293', 'H', 6973, 2637, 'I'], [6053, 'h', 'U', '7009', '1333', '9293', 'h', 'Y', 3749, 9485]