In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['z', 5515, 8769, 'i', 'N', 'e', 'O', '4023', 'a', '207', 'z', '6181', 'V', '9865', 'Y', 'q', 'q', '7527', '6061', '8593', '449', 'j', 'y', 'm', 'Z', 'P', 'z', 5365, 2789, 'F', 3311, 't', 4825, 'e', 943, 1375, 5043, 1679, 6541, 4803, 'd'], [4833, 6395, 'G', 'x', 'a', 5695, 4153, 'X', 3597, 'J', 'W', 9621, 'N', 'k', 'u', 'i', 'N', 'e', 'O', '4023', 'a', '207', 'z', '6181', 'V', '9865', 'Y', 'q', 'q', '7527', '6061', '8593', '449', 'j', 'y', 'm', 'l', 'b', 'M', 'y', 'F', 5363, 3285, 'Q', 1703, 'C', 175, 'x', 'U', 5455, 'U', 2633, 'T']