In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['A', 'Q', 'n', 'V', '7505', 'i', '2141', '5649', 'l', 'd', '9801', 'P', 'M', 'u', 'X', 'W'], ['M', 'G', 2891, 2625, 'N', 1579, 'V', '7505', 'i', '2141', '5649', 'l', 'd', '9801', 4641, 8975, 'T', 'Y']