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: Knee arthroscopy is used basically in ____ ways.
Example Output: three

Example Input: Most fibroids stay small and cause ____ problems at all.
Example Output:
no