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:
Warthogs also sport ____ sharp tusks.

Ex Output:
four


Ex Input:
Females usually reach sexual maturity at about four years of age, males at about ____ years.

Ex Output:
six


Ex Input:
Mothers begin to prepare girls to run a household when they are between ____ and nine years old.

Ex Output:

seven