In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['f', 'p', 6831, 'm', 6699, 6957, 1309, 'S', 'o', 5005, 'y', 'W', 'Y', 7281, 5369, 'w', 't', 'a', 9615, 'P', 'I', 'h', 'o', 'z', '6929', '2709', '2455', '7695', 'G', 'E', '4299', 'L', 't', '3523', 'P', '6115', '117', 'X', '4459', '3341', 'e', '7405', 'm', '3231', '7221', 'T', '5025', '3695', '5669', 'P', 'd', 5505, 't'], ['W', 7235, 4817, 997, 2647, 'N', 5735, 'J', 6011, 2799, 'c', 8145, 6333, 'Z', 'g', 5485, 661, 'U', 'D', 'E', 'B', 2985, 7091, '6929', '2709', '2455', '7695', 'G', 'E', '4299', 'L', 't', '3523', 'P', '6115', '117', 'X', '4459', '3341', 'e', '7405', 'm', '3231', '7221', 'T', '5025', '3695', '5669', 'P', 'H', 4961, 'o', 'N', 8767, 'O', 5485]