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".

Ex Input:
I didn't eat any ice cream or any cake.

Ex Output:
acceptable


Ex Input:
No one believes that he is a fool.

Ex Output:
acceptable


Ex Input:
Why don't you leaving me concentrate on my work?

Ex Output:

unacceptable