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:
Kinetic energy consists of ____ types of energies.

Ex Output:
three


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

Ex Output:
four


Ex Input:
Soft corals come in shapes that look like whips, plumes, or fans and have only ____ tentacles.

Ex Output:

eight