In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['i', 'e', 8463, 'D', 8335, 2587, 'w', 'H', 'j', 8205, 9707, 'r', 1335, 'D', 'I', 'U', 1643, 'z', 'e', 'x', '9427', 'K', 'c', 'A', 'p', 'N', 'o', '1273', 'M', 'D', '21', '4537', '4173', '7953', 'g', '3351', 'u', 'u', 4929, 'O', 'q', 5143, 7635, 5189, 6699, 5577, 'X', 'p', 7575, 'f'], ['D', 109, 'C', 'l', 'S', 'e', 'x', '9427', 'K', 'c', 'A', 'p', 'N', 'o', '1273', 'M', 'D', '21', '4537', '4173', '7953', 'g', '3351', 'u', 'X', 'q', 'N', 7511, 'M', 3617, 'J', 'B', 's', 'x', 'f', 9089, 4971, 9841]