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:
Body language is used when ____ words can express what the person is trying to communicate.

Ex Output:
no


Ex Input:
Some species live for as little as ____ months.

Ex Output:
six


Ex Input:
Nest building begins about four to ____ weeks after martins arrive at their final breeding site.

Ex Output:

six