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: The little cat devoured a mouse last night.

Output: acceptable


Input: Consider Input: How do you wonder which problem to solve?

Output: unacceptable


Input: Consider Input: There was a snake behind the car the time bomb was sitting in.


Output: acceptable