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:
Endospores exhibit ____ signs of life, being described as cryptobiotic.

Ex Output:
no


Ex Input:
Respiratory therapists complete two to ____ years of education.

Ex Output:
four


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

Ex Output:

six