How do you properly spell as a shortform of ouch or to indicate hurt?

There are several ways to spell "as" as a shortform of "ouch" or to indicate hurt, but the most common and generally accepted spellings are:

* "Ow" - This is the most widely used and understood spelling.

* "Oof" - This spelling is often used to express a deeper or more intense pain.

* "Ahh" - This spelling can be used to express both pain and surprise.

It's important to note that these spellings are all informal and used primarily in casual settings. They don't have official spellings, and the best way to choose is based on the context and the level of formality.