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.

Ex Input:
Marsupials have ____ vaginas and a double uterus.

Ex Output:
two


Ex Input:
Sedge wrens are listed as endangered by all ____ states.

Ex Output:
three


Ex Input:
Plane joint means ____ adjoining surfaces in parallel planes.

Ex Output:

two