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: Flat screens come in ____ varieties, analog and digital.

Output: two


Input: Consider Input: Photons have no mass and ____ electrical charge.

Output: no


Input: Consider Input: String theory has ____ defining features.


Output: two