In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['n', 6703, 'e', 8201, 'O', 2989, '3049', '9943', 'v', '9651', 'V', 'm', '4743', '5505', 'c', 'F', 6079, 7861, 6891, 4301, 797, 1929], [5925, 'b', 725, '3049', '9943', 'v', '9651', 'V', 'm', '4743', '5505', 'c', 'j', 'R', 2867, 6451, 'E', 'm', 'I', 9427]