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 kids laughed themselves into a frenzy.

Output: acceptable


Input: Consider Input: The king of Rock and Roll is more popular than the one of country music.

Output: unacceptable


Input: Consider Input: Only the travelers who anybody has ever robbed don't carry machetes.


Output: unacceptable