Thirteen

Thirteen ("Grob'be" in The Pencil Language or Tradak in Future English) is the next verse after Twelve, and is a very weird, "solid verse" or sorts. It is also considered unlucky.

Appearance
Thirteen appears to be a relatively normal watery planet. From the inside, Thirteen appears to be entirely black, just like the previous verses in the Eleven and One Chain.

Structure
Thirteen has a shallow, watery surface with an extremely tough and thick layer of rock underneath it. At the center of Thirteen lies a very weird, "colorless" and lawless space that holds exactly 13 Twelves in a Protoverse. This space, other than holding 13 Twelves, also contains many "holes" that will lead into a "in-between" space completely devoid of anything.