In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6923, 5579, 'Q', 'L', 'R', 'L', 'o', 5619, 'k', 'u', 'm', 'a', 9353, '8845', 'l', 'S', '4907', 'd', '9655', '5741', 'z', 'i', 'O', 'n', '9877', '8283', 'z', '8505', '8691', 'f', 'Z', '9749', 'D', 'M', 'O', '5985', 'E', 'R', 'l', 'M', 1567, 5231, 'Y', 7111, 'u', 'm', 'f', 'U', 'z', 'V', 'W'], [4181, 37, 'h', 'n', 'Z', 2629, 3999, 'J', 'l', 'v', 7103, 'U', 'k', 's', 6473, 8439, 969, 8403, 'j', 8755, 'X', '8845', 'l', 'S', '4907', 'd', '9655', '5741', 'z', 'i', 'O', 'n', '9877', '8283', 'z', '8505', '8691', 'f', 'Z', '9749', 'D', 'M', 'O', '5985', 'E', 'R', 'z', 969, 'A', 'i', 'A', 9027, 553, 't', 5303, 'F', 9231, 7329, 7523, 'z']