Task: Program Execution
Input (English): 18, 23, ['H', '8541', 'X', 'M', '2617', 'N', '9829', '6257', 'S', '1609', '3993', 'b', 'h', '5357', 'M', '4449', 'a', 'O', '7983', '8067', 's', '797', 'O']
Output (English): O79838067s797O