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:
Corporate mergers occur when ____ companies combine.

Ex Output:
two


Ex Input:
Nymphs are less than ____ millimeters in size.

Ex Output:
two


Ex Input:
Autism is a severe life-long disability that typically occurs in the first ____ years.

Ex Output:

three