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: Carla slid the book to Dale.

Output: acceptable


Input: Consider Input: It was with a great deal of regret that I vetoed your proposal.

Output: acceptable


Input: Consider Input: The squirrel ran right up the tree.


Output: acceptable