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:
Clovers occasionally have leaves with ____ leaves, instead of the usual three.

Ex Output:
four


Ex Input:
Industrial halocarbons are effective ozone-depleters for ____ reasons.

Ex Output:
two


Ex Input:
Classes play ____ distinct roles in object-oriented programming.

Ex Output:

two