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.

Ex Input:
Sexual maturity is reached at ____ years, and females calve every other year.

Ex Output:
four


Ex Input:
Some women experience a labor of three to ____ days.

Ex Output:
five


Ex Input:
Sweeps are a race for ratings that occurs annually ____ times a year and last a month.

Ex Output:

four