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:
Mollusks have one or ____ hearts.

Ex Output:
two


Ex Input:
Box turtles are mature and capable of mating at ____ years old.

Ex Output:
five


Ex Input:
Plants have three and ____ way branching carying sixteen buds.

Ex Output:

four