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:
Television has ____ dimensions to work with, sight and sound.

Ex Output:
two


Ex Input:
All ticks have ____ pairs of legs during the immature stage and four pairs as an adult.

Ex Output:
three


Ex Input:
Most bacteria are one or ____ microns wide.

Ex Output:

two