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:
Female mealybugs have only ____ nymphal stages.

Ex Output:
three

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

Ex Output:
six

Ex Input:
Every animal has ____ limbs.

Ex Output:
four