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:
Ground squirrels have a single litter a year that averages from ____ to nine young.

Ex Output:
four


Ex Input:
All crabs have ____ pair of chelipeds and four pairs of walking legs .

Ex Output:
one


Ex Input:
Pups average ____ feet in size and weighing thirty pounds at birth.

Ex Output:

three