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:
Blisters normally burst and crust over within three to ____ days.

Ex Output:
five


Ex Input:
Calcite makes up ____ well known rocks limestone and marble.

Ex Output:
two


Ex Input:
Fothergillas have ____ serious insect or disease problems.

Ex Output:

no