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".

Example Input: Lee solved the puzzle how Kim solved it.
Example Output: unacceptable

Example Input: I detached the handle and the box.
Example Output: unacceptable

Example Input: Do not use these words in the beginning of a sentence.
Example Output:
acceptable