In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['s', 'M', 'y', 'b', 'S', 'P', 'J', '8781', '7865', '1961', '6767', 'a', 'r', 'H', 'j', 'a', 'b', 'i', 'A', 2579, 8191, 'g', 3591, 4195, 'q', 1357], ['F', 'U', 'G', 7763, 1385, 'm', 1089, 4701, 1565, 'm', 9713, 'P', 'J', '8781', '7865', '1961', '6767', 'a', 'r', 'H', 'j', 'a', 'X', 'b', 'f', 7385, 'G']