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:
Nymphs go through ____ instars and a pupa stage before reaching adulthood.

Ex Output:
three


Ex Input:
Cleavage is good in ____ directions at right angles.

Ex Output:
two


Ex Input:
Population growth occurs in ____ ways, births and immigration.

Ex Output:

two