In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['L', 'W', 4919, 'y', '665', '9279', 'Z', 'd', '205', 'g', 'n', 305, 'r', 'B'], ['x', 'j', '665', '9279', 'Z', 'd', '205', 'a', 'V']