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: Insects go through either three or ____ stages.

Output: four


Input: Consider Input: Multiplications are always ____ complemental.

Output: two


Input: Consider Input: Pollen grains have ____ very important attributes.


Output: two