In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['H', 1431, 'E', 'f', 7201, 'Q', 5943, '1961', '9981', 'f', 'L', 'Q', '9733', '2927', 'j', 'r', '8697', '2355', '5159', '2089', '3143', '2719', 'E', 9375, 2631], [8063, 'U', 'u', 5571, 6617, '1961', '9981', 'f', 'L', 'Q', '9733', '2927', 'j', 'r', '8697', '2355', '5159', '2089', '3143', '2719', 'r', 'I', 5089, 'c', 2239, 'H', 'Y', 1205, 1639, 9561]