In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[91, 'n', 'b', 7097, 8575, 1715, '3505', '8721', 'Q', 'd', 'A', 'j', 'R', '4843', '8687', '4131', '3619', 'K', '5629', '7271', '4771', 't', '7271', 'R', 'n', 'T', 'I', 5581, 'o', 'H', 'H', 211, 'S', 5815, 'm', 3467, 391, 7371, 8509, 'I'], [2035, 'b', 89, 'D', 5403, 'f', 'Q', 'B', 739, 'e', 4709, 581, 7379, 'e', 'M', 'p', 'e', 845, '3505', '8721', 'Q', 'd', 'A', 'j', 'R', '4843', '8687', '4131', '3619', 'K', '5629', '7271', '4771', 't', '7271', 'R', 'H', 'Y', 1047]