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.

Example Input: Parallel coordinates use ____ or more parallel axes.
Example Output: two

Example Input: Rattlesnakes breed only every ____ to three years.
Example Output: two

Example Input: Females like to care for ____ to four babies at a time because one cub is a waste of time.
Example Output:
three