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: Parallel coordinates use ____ or more parallel axes.

Output: two


Input: Consider Input: Some adjectives have ____ forms, others have four.

Output: two


Input: Consider Input: Synchronized swimmers practice eight hours a day, ____ days a week.


Output: six