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:
Lunar eclipses occur every ____ months, on average.

Ex Output:
six


Ex Input:
Compound machines are ____ or more simple machines working together.

Ex Output:

two