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:
Intermittent streams flow at least ____ months of the year.

Ex Output:
six


Ex Input:
Natural gadolinium is a mixture of ____ isotopes.

Ex Output:

seven