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:
Distance Reports the distance between the last ____ picked atoms.

Ex Output:
two


Ex Input:
Fruit is a silique opening by ____ valves.

Ex Output:
two


Ex Input:
Tin has ____ allotropic forms.

Ex Output:

two