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:
Most bacteria have one or ____ circular chromosomes.

Ex Output:
two


Ex Input:
Alcohol content is ____ to three times more than beer.

Ex Output:
two


Ex Input:
Wrought aluminium is identified with a ____ digit number which identifies the alloying elements.

Ex Output:

four