This Air Ambigram is a nice short symmetric ambigram that is a good example of the letters in one orientation flipping over to become different letters in another orientation!
The graphic to the left shows that this design says 'Air' one way and also says 'Air' the other way.
For a mental work-out, try to read it upside-down without rotating it (you can mouse over it at any time to make it spin).
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