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

Example Input: Female cats can go into heat for the first time as early as _ months of age.
Example Output: five

Example Input: Most cats have only four to _ toes per paw, depending on whether it is the front or back paw.
Example Output: five

Example Input: Men get emphysema about _ times more often than women do.
Example Output:
six