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:
Seismologists offer ____ major theories for the occurrence of large, deep earthquakes.

Ex Output:
three


Ex Input:
Immature house centipedes start with ____ body segments.

Ex Output:
four


Ex Input:
Dolphins live in social groups of ____ to several hundred.

Ex Output:

five