In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['f', 1163, 7803, 2897, 't', 'E', 'U', '295', '1657', 'u', 'v', 'g', 'W', '6555', 'T', 'H', 'c', 'Q', 9201, 189], ['j', 3391, 'V', 227, 'Q', 'O', 'f', 5291, 4063, 'U', '295', '1657', 'u', 'v', 'g', 'W', '6555', 'T', 'H', 'g', 7277]