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

Ex Input:
Most polyps cause no symptoms and take five to _ years to change to cancer.

Ex Output:
seven


Ex Input:
Cubs emerge from the den when they are four to _ months old.

Ex Output:
six


Ex Input:
Most ovarian cysts go away on their own in _ to three months without causing any problems.

Ex Output:

one