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: Female dogs come into heat every ____ months or so.
Example Output: six

Example Input: Warthogs also sport ____ sharp tusks.
Example Output: four

Example Input: Cords comprise ____ insulated wires, joined at the middle.
Example Output:
two