Task: Program Execution
Input (English): 3, 7, ['4885', 'j', 'y', 'H', 'z', 'y', 'G', '6993', '9867', 'P', '1071', 's', 'B', 'C', 'k', '8241', '9883', 'P', '4587']
Output (English): yHzyG