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:
Plants have roots for ____ main reasons.

Ex Output:
two


Ex Input:
Giant pandas move on all ____ legs.

Ex Output:
four


Ex Input:
All food consists of ____ nutrients or nourishing substances.

Ex Output:

six