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:
Milk contains ____ complex carbohydrates.

Ex Output:
zero


Ex Input:
Flatbed scanners can also record ____ dimensional objects of many sizes and shapes.

Ex Output:

three