Task: Program Execution
Input (English): 4, ['z', '3591', 'Z', '4999', 'C', '589', 'h', 'G', '699', 'b', 'X', 'K', '1193', 't', '739', 'e', 'O', '2899', '9407', '1141', 'Z', 'z', 'J', 'C', '8407']
Output (English): z, 3591, Z, 4999