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

Ex Input:
Cubs stay with their mothers for up to _ years.

Ex Output:
three


Ex Input:
Climatic regions Contrasts between the interior and the coasts produce _ main climatic regions.

Ex Output:
six


Ex Input:
Adolescent boys are over _ times more likely to succeed than are adolescent girls.

Ex Output:

four