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: Most butterflies live only two to ____ weeks.

Output: four


Input: Consider Input: Irrigated land is almost ____ times as productive as rainfed cropland.

Output: three


Input: Consider Input: Breeding involves the mixing of ____ complete genomes.


Output: two