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:
Some plants even have ____ leaves or small seasonal leaves that grow after it rains.

Ex Output:
no


Ex Input:
Differentiation is caused by the energy going in ____ directions.

Ex Output:
two


Ex Input:
Enzymes often catalyze reactions with ____ substrates and two products.

Ex Output:

two