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: Insomnia can be short-lived, lasting only one to ____ nights.

Output: two


Input: Consider Input: Fish kills can occur when oxygen is less than ____ ppm.

Output: three


Input: Consider Input: Collages can have ____ or three layers.


Output: two