The nice short Holy Grail ambigram displayed to the left 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 you can read this as 'Holy' when the design is upright and as 'Grail' when the design is inverted (or is it the other way around?).
Hover over the ambigram to see it spin.
Of course, you can create any ambigram you wish with the 'Create New Ambigram' button on the top of this page, but if you would like to see how the Holy Grail ambigram will look on the various FlipScript products, click on one of the categories in the red menu bar above and the Holy Grail ambigram will appear on everything you see.