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:
Gloves have ____ ridges or crevices in which the bacteria can hide.

Ex Output:
no


Ex Input:
Divorce affects one out of every ____ marriages today.

Ex Output:
four


Ex Input:
Mahjong is a Chinese game over ____ thousand years old.

Ex Output:

two