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 lemmings are ____ to six inches in length and weigh less than four ounces.

Ex Output:
three


Ex Input:
Some species bear living offspring only every three to ____ years.

Ex Output:
five


Ex Input:
Hypnosis is effective for the treatment of dermatological conditions in ____ specific ways.

Ex Output:

three