In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['G', 'N', 2455, 2031, 3541, 3421, 'B', 9929, 'V', 8215, 'E', 'z', 'P', 'j', '8389', 'V', '4269', '6739', '5901', 'I', '7697', 'V', 'I', 9907, 'R', 'v', 'f', 't'], [6293, 'l', 'E', 'z', 'P', 'j', '8389', 'V', '4269', '6739', '5901', 'I', '7697', 'V', 'T', 7683, 'O', 'r', 9377, 'S', 'x']