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: Birds have ____ beak, two wings, and two feet.

Output: one


Input: Consider Input: Water is the only substance on earth found naturally in ____ forms - solid, liquid, and gas.

Output: three


Input: Consider Input: Gray fox vixens usually give birth to ____ or four pups at a time.


Output: three