If you want to write the words “upside down” upside down, the words “umop apisdn” will give you an upside-down mirror image. Just to avoid confusion, the upside down “e” resembles a typeset version of the letter “a.”

If you’d like to do the same thing for the word “swims,” you are in luck. It is the same upside down as it is right side up.

Read more fun facts about languages.

Read some perplexing pangrams.