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 cars are things that have ____ wheels.

Ex Output:
four


Ex Input:
Some animals have only ____ or three chambers .

Ex Output:
two


Ex Input:
Susceptibility is determined by ____ distinct genetic loci.

Ex Output:

three