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: To behave oneself in public is expected.

Output: acceptable


Input: Consider Input: Leslie staffed employees in the store.

Output: unacceptable


Input: Consider Input: Frances has had her clean the drapes.


Output: acceptable