In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['B', 'V', '6999', 'n', '8529', '9843', 'S', '3683', 'M', 'D', 'N', '5655', 'Q', '6805', '7843', 'W', 'Z', 'n', 'W', '7811', 'r', '7863', '107', '4261', '9561', 'l', '5733', 'T', '7419', '9639', 'q', 6427, 'V', 3771, 'j', 'C', 'L', 3933, 'S', 6405, 'T', 2247, 8291, 2705, 919, 8217, 'X', 8025, 'I'], ['G', 'S', 3599, 7117, 8769, 8703, 'Y', 'H', 'J', 9321, 8169, 9031, 6871, '6999', 'n', '8529', '9843', 'S', '3683', 'M', 'D', 'N', '5655', 'Q', '6805', '7843', 'W', 'Z', 'n', 'W', '7811', 'r', '7863', '107', '4261', '9561', 'l', '5733', 'T', '7419', '9639', 'b', 'I', 1531, 313, 6893, 'Y', 6735, 3087, 'b', 9669, 1845, 'g', 3517, 8143, 5693, 'l', 'o', 4049, 'q', 8397, 'e', 'N', 'k']