Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Input: Consider Input: Most healthy men experience about three to ____ erections in their sleep each night.

Output: five


Input: Consider Input: Cricket usually lays about five eggs, one every other day for ____ days.

Output: ten


Input: Consider Input: Modern scientists recognize ____ main subclasses of prairie in Illinois.


Output: six