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

Input: Consider Input: Pelagic division is divided into neritic and _ levels of pelagic provinces.

Output: three


Input: Consider Input: Some women experience a labor of three to _ days.

Output: five


Input: Consider Input: Most people develop antibodies within _ months and some can take up to six months.


Output: three