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: Some babies start sleeping through the night on their own around three or ____ months.

Output: four


Input: Consider Input: Tin exists in ____ allotropic forms.

Output: three


Input: Consider Input: Young horses spend their first four or ____ years with very little contact with humans.


Output: five