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:
Red pandas have ____ toes that are widely separated and semi-retractable claws.

Ex Output:
five


Ex Input:
Most organ systems are operational in the fetus by ____ to six months.

Ex Output:
four


Ex Input:
Moths are most active during the first ____ to five hours of darkness.

Ex Output:

three