In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6699, 8245, 2655, 'u', 'p', 'p', 5695, 'n', 'B', 4695, 'z', 'j', 'G', 9829, 'x', 4415, 'n', 'C', 'I', 4473, 1413, 'U', 'd', '2767', '9385', '9449', 'M', '4993', 'f', '6123', 'P', '9857', '9741', '3399', 'X', '9827', '7981', 'e', '5253', '3113', '233', '6503', 'F', 'L', 'R', 'b', 'z', 'o', 9993, 'b', 1423, 6027, 2259, 'B', 1793, 'X', 'N', 'G', 'j', 3847, 8289, 'x', 141, 'd', 7433, 865, 8931, 'X', 'B', 'w', 6215], [9, 9053, 'U', 'd', '2767', '9385', '9449', 'M', '4993', 'f', '6123', 'P', '9857', '9741', '3399', 'X', '9827', '7981', 'e', '5253', '3113', '233', '6503', 'F', 'L', 'R', 'b', 'g', 'r', 7675]