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:
Taiwanese law permits a jail term of up to ____ years for spreading computer viruses.

Ex Output:
three


Ex Input:
Water consists of ____ hydrogen and one oxygen atom.

Ex Output:
two


Ex Input:
Sustainable development has ____ components - environment, society, and economy.

Ex Output:

three