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: Mature females bear two or even ____ calves a year.

Output: three


Input: Consider Input: Human feet bear average ____ to six hundreds tons of weight everyday.

Output: five


Input: Consider Input: Young girls keep their hair cut very short until they are about ____ years old.


Output: seven