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: How do you wonder which problem to solve?

Output: unacceptable


Input: Consider Input: John would be liked to win.

Output: unacceptable


Input: Consider Input: The only travelers who anybody has ever robbed don't carry machetes.


Output: acceptable