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: Differentiation is caused by the energy going in ____ directions.
Example Output: two

Example Input: Some women experience a labor of three to ____ days.
Example Output: five

Example Input: Ear buds have no cuffs that surround the ear, and ____ headband.
Example Output:
no