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: Fats come in ____ different forms saturated and unsaturated.

Output: two


Input: Consider Input: Prairie dogs bear four or ____ young per litter.

Output: five


Input: Consider Input: Presidential elections take place every ____ years.


Output: four