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.

Input: Consider Input: Every isometry is the composition of one, two, or ____ reflections .

Output: three


Input: Consider Input: Most marine sediments are of ____ basic types.

Output: two


Input: Consider Input: Avian kidneys have ____ kinds of nephrons.


Output: two