In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['R', 437, 2943, 4411, 8857, 'I', 'i', 6377, 'g', 'Y', 'T', 'a', 's', 5593, 4297, 9675, 'L', 5161, 'n', 3745, '757', 'P', 'h', '2307', 'H', '329', '17', '6029', '5783', '1611', 'D', '637', '3021', '4563', 'e', 'Q', '4055', 'm', '985', '10027', 'M', 'f', 'K', 'J', 'i', 'v', 4791, 9847, 'B', 'g', 601, 8885, 2243, 7381, 'H', 8619, 6529, 'O', 5895, 'C', 8623, 'u', 'I'], ['f', 'o', 9561, 63, 's', 1783, 6403, 'B', 3169, 7637, 1075, 'C', 1319, 4029, 2077, 'J', 5605, 'C', 'Y', 'p', '757', 'P', 'h', '2307', 'H', '329', '17', '6029', '5783', '1611', 'D', '637', '3021', '4563', 'e', 'Q', '4055', 'm', '985', '10027', 'M', 'f', 'K', 'J', 'I', 'x', 'V', 'C', 5903, 3937, 7253]