In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1527, 'V', '111', '49', '1573', '5557', 'x', 'w', 3983, 4925], [7393, 'M', 3089, 1815, '111', '49', '1573', '5557', 'x', 'k', 'R', 'i', 'U']