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:
Crustaceans have ____ pairs of antennae.

Ex Output:
two


Ex Input:
Some rusts produce up to ____ different spore forms.

Ex Output:
five


Ex Input:
Some sources place opium consumption in Teheran at ____ tons a day.

Ex Output:

five