You're given a sentence and your task is to classify whether the sentence is acceptable or not. Any sentence which is grammatically correct, has a naturalistic text, is written by a native speaker and which minimizes superfluous content is acceptable, otherwise unacceptable. If the sentence is acceptable then write "acceptable", otherwise "unacceptable".

Input: Consider Input: Fluffy is sick, which nobody knows.

Output: acceptable


Input: Consider Input: The more Fred is obnoxious, the less you should pay attention to him.

Output: acceptable


Input: Consider Input: Bill would be easy for it to become expensive for you to chat with in Moscow.


Output: unacceptable