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:
Brook stickleback have prominent mouths, large eyes and ____ to six spines on their backs.

Ex Output:
four


Ex Input:
Onions are of ____ general types.

Ex Output:
two


Ex Input:
Cutters can sometimes reach ____ feet in height and have large, many-petaled heads.

Ex Output:

three