Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Example Input: Many countries have ____ laws against kiddie porn on the Internet.
Example Output: no

Example Input: Object permanence is seen in children ____ to twelve months old .
Example Output: eight

Example Input: Desferal toxicity is monitored every ____ months via vision and hearing screening.
Example Output:
six