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:
Sapsuckers are a group of ____ species known for literally drinking the sap of trees.

Ex Output:
four


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

Ex Output:
six


Ex Input:
Antibiotic therapy requires a combination of ____ medications.

Ex Output:

two