In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['E', 'v', 'l', 5587, 6863, 'b', 6685, 'd', '8923', '787', '331', '8215', 'i', '9025', '6051', 'H', 'A', '1637', 's', '8421', '1265', 'z', '5823', '2649', 'Q', 'b', 'P', 'F', '4127', 'O', '4637', 'o', 'f', 'x', 3993, 'Q', 'h', 6739, 7923, 8453, 7731], ['v', 3433, 757, 'z', 'z', 9797, 9427, 4029, 4041, 9611, 'd', '8923', '787', '331', '8215', 'i', '9025', '6051', 'H', 'A', '1637', 's', '8421', '1265', 'z', '5823', '2649', 'Q', 'b', 'P', 'F', '4127', 'O', '4637', 'I', 'g', 'm', 'j', 7685, 'W', 'a']