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:
Norplant implants are ____ matchstick size rods that are inserted into the upper arm.

Ex Output:
six


Ex Input:
Some plants even have ____ leaves or small seasonal leaves that grow after it rains.

Ex Output:
no


Ex Input:
Humans host ____ species of louse, the head louse , the body louse and the pubic louse .

Ex Output:

three