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:
Most cats have five toes on each front paw, but only ____ toes on each back paw.

Ex Output:
four


Ex Input:
Some species live for as little as ____ months.

Ex Output:
six


Ex Input:
Affected dogs die because of anemia and hepatic failure and death by ____ years of age.

Ex Output:

five