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:
Wolves have ____ different types of fur.

Ex Output:
two


Ex Input:
Knee arthroscopy is used basically in ____ ways.

Ex Output:
three


Ex Input:
Fashion is a business which changes every ____ months.

Ex Output:

three