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:
Giant pandas move on all ____ legs.

Ex Output:
four


Ex Input:
Cattle can have up to six to ____ years of grazing, after which a scrub savannah grows up.

Ex Output:
ten


Ex Input:
Heat exchange is the composite of ____ mechanisms in which the body can gain, lose or both.

Ex Output:

four