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: Manatees swim ____ to six miles per hour.

Output: two


Input: Consider Input: Acupuncture needles are about two to ____ inches long.

Output: three


Input: Consider Input: Asthma ranks among the top ____ reasons for visiting a doctor.


Output: ten