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:
Rabbinic literature is made up of ____ major kinds of works.

Ex Output:
five


Ex Input:
Rattlesnakes breed only every ____ to three years.

Ex Output:
two


Ex Input:
Nutrient cycles are broken up into ____ levels.

Ex Output:

three