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:
Mature plants can be up to ____ feet tall.

Ex Output:
six


Ex Input:
Igneous rock occurs in ____ ways .

Ex Output:
two


Ex Input:
Medical drugs can only kill ____ or two parasites each.

Ex Output:

one