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

Input: Consider Input: Men produce brand new sperm every _ to three months.

Output: two


Input: Consider Input: Most intestinal worms take _ to four weeks for maturation from their larval stages into adults.

Output: three


Input: Consider Input: Cattle can have up to six to _ years of grazing, after which a scrub savannah grows up.


Output: ten