In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['l', 'J', 'H', 'A', 7065, 847, 'G', 'I', 943, 'Y', 8031, 4369, 'S', 5593, 'P', 4651, 5427, 'x', 5881, 'Y', 9887, 'j', 'n', '3257', 'X', 'K', '7233', '8013', '4157', 'V', 'm', '1007', 'A', 'j', 'r', '9375', 'o', 'g', 'i', '5045', 'o', 'b', '4483', '4321', '6131', 'U', '517', '1619', 'j', 'T', 's', 2847, 'Q', 1219, 7611, 'v', 847, 529, 4921], ['B', 'u', 2149, 'B', 'l', 3105, 2547, 'c', 8921, 1093, 's', 'A', 9507, 1057, 'j', 'n', '3257', 'X', 'K', '7233', '8013', '4157', 'V', 'm', '1007', 'A', 'j', 'r', '9375', 'o', 'g', 'i', '5045', 'o', 'b', '4483', '4321', '6131', 'U', '517', '1619', 'j', 'U', 'R', 'z', 539, 5397, 'H', 3735, 'e', 5921, 'S', 67, 'X', 9805, 'P', 'x']