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:
Insomnia can be short-lived, lasting only one to ____ nights.

Ex Output:
two


Ex Input:
Embryos develop and hatch in about four weeks, then spend four to ____ months in the tadpole stage.

Ex Output:

five