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:
Blisters normally burst and crust over within three to ____ days.

Ex Output:
five


Ex Input:
Coho usually live for ____ years and grow rapidly in their final year.

Ex Output:
three


Ex Input:
Bowheads also boast ____ blowholes, as do all baleen whales.

Ex Output:

two