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:
Most species have ____ toes, three of which are forward-pointing.

Ex Output:
four


Ex Input:
Comprehension is the second of the ____ elements of the informed consent process.

Ex Output:
three


Ex Input:
Insects have ____ pairs and arachnids have four pairs of limbs.

Ex Output:

three