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: Cardinals have ____ main functions in the church.

Output: three


Input: Consider Input: Elephants have five toes on the fore feet and ____ on the hind feet.

Output: four


Input: Consider Input: Swimmers have to be at least ____ years old and comfortable in water.


Output: seven