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

Ex Input:
Carbon dioxide extinguishes fire by physically attacking all _ points of the fire triangle.

Ex Output:
three


Ex Input:
Cockatiels average _ to five eggs per nest, with an egg typically laid every other day.

Ex Output:
four


Ex Input:
Most cosmetic surgery done for aging is of limited value, usually holding up five to _ years.

Ex Output:

seven