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:
Some babies start sleeping through the night on their own around three or ____ months.

Ex Output:
four


Ex Input:
Most spiders have eight eyes and ____ legs.

Ex Output:
eight


Ex Input:
Natural uranium has ____ isotopes in different ratios.

Ex Output:

three