In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['c', 'i', 5333, 4603, 'U', '7715', '4321', 'i', '9363', '2665', '1345', 'u', '5951', '3133', '5749', 'l', 'c', 'c', 2939, 6165, 791, 'i', 'n', 6247, 'H', 1349], ['e', 'B', 'E', 'o', 5405, 'K', 8121, 1871, '7715', '4321', 'i', '9363', '2665', '1345', 'u', '5951', '3133', '5749', 'l', 'c', 'A', 3785, 'X', 6783]