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:
Dholes are highly social animals and live in packs of about ____ dogs.

Ex Output:
ten


Ex Input:
Most species have four toes, ____ of which are forward-pointing.

Ex Output:
three


Ex Input:
Sexual maturity is reached at about ____ years of age.

Ex Output:

two