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:
Salsa works on the basis of Mambo - a pattern of ____ steps danced over eight counts of music.

Ex Output:
six


Ex Input:
Many bilingual people grow up speaking ____ languages.

Ex Output:
two


Ex Input:
Ozone is a colorless gas, which is composed of ____ oxygen atoms linked together.

Ex Output:

three