In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['g', 'o', 'A', 'S', 'n', '6133', 'r', 'b', 'Z', 'I', '299', 'B', '913', 'Y', 1467], ['z', 9819, 'k', 1749, 6495, 6873, 3971, 5609, '6133', 'r', 'b', 'Z', 'I', '299', 'B', '913', 'U', 't', 'R', 6761, 'o', 8075, 'h']