In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4759, 2601, 'G', 'b', 6697, 3037, 1901, 7963, 6677, '2583', '709', 'f', '5293', '6515', '607', 'A', '4441', 'I', 'E', 'j', 'X', '9445', 'i', 'o', 'l', 'R', 'm', '4113', '2013', '5541', '7281', '1823', '1927', '1521', '5801', 'K', '1761', 'z', '3219', 'Q', 'P', 'X', 'D', 5641, 2709, 677, 3439, 'z', 8401], ['P', 'W', 'e', 6957, 'u', 'w', 2069, 1783, 'j', 'b', 'x', 't', '2583', '709', 'f', '5293', '6515', '607', 'A', '4441', 'I', 'E', 'j', 'X', '9445', 'i', 'o', 'l', 'R', 'm', '4113', '2013', '5541', '7281', '1823', '1927', '1521', '5801', 'K', '1761', 'z', '3219', 'm', 3863, 3021, 7219, 'F', 'O', 3361, 'u']