Task: Program Execution
Input (English): 4, ['A', '1639', '4171', 'b', 'k', '3383', '5715', 'q', 'B', 's', '7535', '1867', 'G', '3073', 'c', '285', 'y', 'P', 'Y', '5569', '2921', 'L', 'V', 't']
Output (English): A, 1639, 4171, b