Task: Program Execution
Input (English): 6, 20, ['k', '3879', '3497', '3141', '1181', '1621', '8485', 'P', 'F', '1963', '6387', '8505', '6007', '8207', 'M', 'O', 'W', 'M', 'a', '4527', '6707']
Output (English): 16218485PF19636387850560078207MOWMa4527