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: Some people routinely sleep only ____ hours a night but feel fine during the day.
Example Output: four

Example Input: Most programmable circuits have at least ____ channels.
Example Output: two

Example Input: Muskrats are very prolific and can reproduce up to ____ times per year.
Example Output:
six