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:
Spermatogenesis creates ____ sperm of equal size.

Ex Output:
four


Ex Input:
Maps have ____ or more bar scales, each in a different unit of measure.

Ex Output:
three


Ex Input:
Breast milk is the preferred food for an infant for the first ____ to six months.

Ex Output:

four