In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['u', 4077, 'Q', 'h', 'M', 6513, 3545, 'G', 3203, 'v', 'M', 'L', 871, 'z', 'J', 4925, 'f', 2747, '1073', '3917', 'f', '6123', 'Y', 'q', '1679', 'c', 'e', 'q', '1761', 'L', '8339', 'X', 'f', 'F', 'y', 'u', '973', 'm', '5745', 'm', 'V', 'B', 'D', 'Q', 'Y', 'd', 4005], ['L', 'x', 5721, 2095, 'E', 'k', 'c', 'm', 6881, 4403, 'O', 'M', 'G', 'K', 7647, 'E', 'v', 771, 'i', 5935, 'L', '1073', '3917', 'f', '6123', 'Y', 'q', '1679', 'c', 'e', 'q', '1761', 'L', '8339', 'X', 'f', 'F', 'y', 'u', '973', 'm', '5745', 'm', 'V', 'v', 'Y', 'S', 'X', 4447, 'p', 1523, 3571, 'N', 'C', 'N', 'G', 5951, 8707, 'J']