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:
Plants grow up to ____ feet tall and spread to about three feet.

Ex Output:
three


Ex Input:
Female dogs come into heat every ____ months or so.

Ex Output:
six


Ex Input:
Spiders have ____ fangs .

Ex Output:

two