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:
Counterpoint is simply ____ or more melodies played simultaneously.

Ex Output:
two


Ex Input:
Body temperature attains ambient levels within four to ____ hours.

Ex Output:
six


Ex Input:
Most sailing ships have between ____ and three mast but some have four.

Ex Output:

one