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.

Example Input: Rabbits have ____ incisors in the upper jaw where rodents have only two.
Example Output: four

Example Input: Most people get one or ____ common colds every year.
Example Output: two

Example Input: Physical science is divided into ____ main branches.
Example Output:
two