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:
Measles usually begin with cold-like symptoms followed by a high fever and a rash ____ days later.

Ex Output:
three


Ex Input:
Cats have five toes on their front paws, but only ____ touch the ground when walking.

Ex Output:
four


Ex Input:
Katydids are green and occasionally pink and can grow up to ____ inches in length.

Ex Output:

five