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: Tetrads come in ____ shapes.
Example Output: seven

Example Input: Babies start swimming lessons as young as ____ weeks old.
Example Output: four

Example Input: Calves remain dependent on their dams until weaned by ____ months.
Example Output:
nine