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:
Ozone leaves ____ by-products except pure oxygen.

Ex Output:
no


Ex Input:
Most babies double their birthweight by ____ to five months.

Ex Output:
four


Ex Input:
Rats can jump ____ feet straight up, and four feet outwards, from a standing position.

Ex Output:

three