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

Ex Input:
Programming occurs in all _ subject areas in the discipline of computing.

Ex Output:
nine

Ex Input:
Females reach sexual maturity around four to _ year-olds.

Ex Output:
five

Ex Input:
Young girls keep their hair cut very short until they are about _ years old.

Ex Output:
seven