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 horse broke Penny's shin.

Output: acceptable


Input: Consider Input: That was why she looked so nice.

Output: acceptable


Input: Consider Input: Everybody who has ever, worked in any office which contained any typewriter which had ever been used to type any letters which had to be signed by any administrator who ever worked in any department like mine will know what I mean.


Output: acceptable