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:
People often have to wait between three and ____ years for an organ especially for a liver.

Ex Output:
five


Ex Input:
Harpists spend ninety percent of their lives tuning their harps and ____ percent playing out of tune.

Ex Output:
ten


Ex Input:
Premature labor is labor that occurs more than ____ weeks before a baby's due date.

Ex Output:

three