In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['u', 3241, '7719', 'K', '787', '761', '7641', 'f', 'p', 'L', 'S', '7565', 'E', 'L', '8651', '3281', 'W', '1929', 'r', '6485', 'q', 9069, 'd', 1639, 841, 3427, 105], [5485, 'i', 'm', 5975, 7993, 1009, 1779, 's', '7719', 'K', '787', '761', '7641', 'f', 'p', 'L', 'S', '7565', 'E', 'L', '8651', '3281', 'W', '1929', 'r', '6485', 'H', 4237, 'i', 5089, 8277, 'J', 6583, 2879, 3047]