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:
Nymphs are less than ____ millimeters in size.

Ex Output:
two


Ex Input:
Owls have ____ toes on each foot, like most birds.

Ex Output:
four


Ex Input:
Substance abuse knows ____ boundaries crossing all cultural, ethnic, and socioeconomic lines.

Ex Output:

no