In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1691, 9521, 'e', 9925, '153', '9657', 'F', '7671', 't', '4113', 'h', '1551', '4963', 'h', 'h', 'H', 2183, 1721, 'P', 1659, 9437, 6403, 2057], ['Y', 6145, '153', '9657', 'F', '7671', 't', '4113', 'h', '1551', '4963', 'h', 'P', 8925, 9233, 4019, 'E', 'm', 1063]