Etonetatae

From the Grimorioum Imperium, Liber Primum - sometimes included as part of the Necronomicon. All signs in the Liber Primum consist of three straight lines, and three curves.

The Grimorium Imperium was supposedly written by John Dee centuries ago, but the inclusion of such names as Cthulhu, Yog-Sothoth, and Azathoth (for example) strongly suggest a more recent authorship.