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: Kayak paddles have ____ blades, canoe paddles have one.
Example Output: two

Example Input: Some animals have only ____ or three chambers .
Example Output: two

Example Input: Ball pythons can stay connected for up to ____ days.
Example Output:
two