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:
Some species bear living offspring only every three to ____ years.

Ex Output:
five


Ex Input:
Wind is renewable, and produces ____ emissions or by-products.

Ex Output:
no


Ex Input:
Structural unemployment is high with about ____ in three persons officially unemployed.

Ex Output:

one