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 dens are oval shape, six to nine feet long and about ____ feet in height and width.

Ex Output:
six


Ex Input:
Sexual maturity occurs at ____ to four years for females and four to five years for males.

Ex Output:
three


Ex Input:
Plants can grow from one and a half feet tall to over ____ feet in height.

Ex Output:

eight