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: Erosion is divided into ____ main categories, water and wind.

Output: two


Input: Consider Input: Infected rodents carry and secrete the virus for about ____ days.

Output: seven


Input: Consider Input: Basket stars ore similar to brittle stars, but basket stars hove the ____ arms much branched.


Output: five