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: Humans have two lungs, each fed by ____ bronchus.

Output: one


Input: Consider Input: Fats come in ____ different forms saturated and unsaturated.

Output: two


Input: Consider Input: Ligand seeks ____ receptors into binding and mutual phosporylation.


Output: two