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:
Hares hold their young ____ to ten days longer.

Ex Output:
seven


Ex Input:
Couples spend ____ billion dollars a year on infertility treatments.

Ex Output:
two


Ex Input:
Rosy barbs grow to ____ inches at most.

Ex Output:

six