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: All orthodontists are dentists, but only about ____ percent of dentists are orthodontists.

Output: six


Input: Consider Input: Rattlesnakes breed only every ____ to three years.

Output: two


Input: Consider Input: Leafhoppers are fast maturing insects, producing up to ____ generations per year.


Output: six