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:
All grays have ____ saturation.

Ex Output:
zero


Ex Input:
Tuberculosis develops in ____ stages.

Ex Output:
two


Ex Input:
Atrial fibrillation increases a person's stroke risk by ____ times.

Ex Output:

six