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:
Light drives the interconversion of ____ forms of phytochroms.

Ex Output:
two


Ex Input:
Sapsuckers are a group of ____ species known for literally drinking the sap of trees.

Ex Output:
four


Ex Input:
Trinity comes from tri-unity which means ____ in one.

Ex Output:

three