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:
Photosynthesis has ____ main sets of reactions.

Ex Output:
two


Ex Input:
Sealants can normally last up to ____ years and hold up very well under normal chewing.

Ex Output:
five


Ex Input:
ClamShells produce a soap with a completely smooth top - ____ indentations of any kind.

Ex Output:

no