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:
Plants generally live ____ years but sometimes longer.

Ex Output:
two


Ex Input:
Airplanes still fly four to ____ times faster than zeppelins.

Ex Output:
five


Ex Input:
Most marine dinoflagellates are unicellular, photosynthetic organisms with ____ flagella.

Ex Output:

two