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:
Some women experience a labor of three to ____ days.

Ex Output:
five


Ex Input:
Some botanists recognise ____ botanical varieties.

Ex Output:
two


Ex Input:
Every animal is run by ____ primary instinctual drives.

Ex Output:

three