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.

Input: Consider Input: Blood donors can give blood every ____ weeks, or six times a year.

Output: eight


Input: Consider Input: Nitric oxide serves ____ main functions in the body.

Output: three


Input: Consider Input: Spiders possess ____ legs compared with the six of the insects.


Output: eight