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

Input: Consider Input: Some manatees have _ or four nails on the tip of each flipper.

Output: three


Input: Consider Input: Transitional milk is secreted between about four days and _ days postpartum.

Output: ten


Input: Consider Input: Enlightenment enriches all _ of the values that define human aspirations.


Output: eight