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:
Smoking causes lung cancer in ____ ways.

Ex Output:
two


Ex Input:
Mature females bear two or even ____ calves a year.

Ex Output:
three


Ex Input:
Olympic baseball is a round-robin competition with ____ teams emerging in the medal round.

Ex Output:

four