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:
Fats come in ____ different forms saturated and unsaturated.

Ex Output:
two


Ex Input:
Aardvarks have ____ toes on the front feet and five toes on their back feet.

Ex Output:
four


Ex Input:
Snow usually produces about ____ inch of water for every ten inches of snow.

Ex Output:

one