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:
Tuataras reproduce very slowly, sometimes taking ____ years to reach sexual maturity.

Ex Output:
ten


Ex Input:
All birds have ____ legs with four toes each.

Ex Output:
two


Ex Input:
Some dentists prefer using the oral rinse for ____ to five days at a time.

Ex Output:

three