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:
Beryllium is found in a variety of countries on ____ continents.

Ex Output:
five


Ex Input:
International trade is a ____ way street.

Ex Output:
two


Ex Input:
Coasters go forward ____ feet for every foot they climb.

Ex Output:

two