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:
Phylogenetic analyses confirm ____ mitochondrial mallard clades.

Ex Output:
two


Ex Input:
Environmentalists warn that ____ turtle species are in severe decline from over-exploitation.

Ex Output:
six


Ex Input:
Some women experience a labor of three to ____ days.

Ex Output:

five