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.

Ex Input:
Babies start swimming lessons as young as ____ weeks old.

Ex Output:
four

Ex Input:
Plants grow up to ____ feet tall and spread to about three feet.

Ex Output:
three

Ex Input:
Rocks come in ____ standard colors and some others as well.

Ex Output:
seven