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:
Humans grow with ____ sets of teeth.

Ex Output:
two


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

Ex Output:
four


Ex Input:
Phylogenetic analyses confirm ____ mitochondrial mallard clades.

Ex Output:

two