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: Knee arthroscopy is used basically in ____ ways.

Output: three


Input: Consider Input: Most cats have five toes on each front paw, but only ____ toes on each back paw.

Output: four


Input: Consider Input: Color is a property with ____ sub-elements.


Output: three