In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Z', 'j', 2743, 'v', 'd', 'F', 'b', 3665, 'M', 'B', 'F', 9343, 'u', '7915', '7137', 'L', 'I', 'Z', '3821', 'W', 'I', 'l', '8583', '9021', 'e', '267', 'F', '2823', '8335', '1427', 'a', 'r', 'G', 'k', 8409, 7879, 'e', 7635, 3705], [4225, 3681, 2921, 'F', 'D', 'a', 2719, 'b', 'J', 7529, 'a', 9929, 8609, 'B', 'S', 3087, 4087, 6887, 'J', 'u', '7915', '7137', 'L', 'I', 'Z', '3821', 'W', 'I', 'l', '8583', '9021', 'e', '267', 'F', '2823', '8335', '1427', 'a', 'r', 'f', 1247, 'e', 'l', 'O', 6659, 5751, 981, 'F', 4859, 'B', 'i', 1471, 't', 6633, 3285, 'l', 'o', 8031, 't']