In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Input: Consider Input: All insects have _ pairs of legs and adult wings.

Output: three


Input: Consider Input: Bilinear interpolation uses a weighted average of the _ nearest pixels.

Output: four


Input: Consider Input: Colds tend to last seven to _ days, while allergies can go on for weeks.


Output: ten