alguien sabe cuál es el ritual mencionado para pedir un incubo/sucubo?,Osea en que consiste si necesito velas etc?

Good morning Admis, my name is Roma and I want to inform you that in the PDF in Spanish about "Demon gods of hell", the Name of the Belial Demon appears In two Form Equals but of a different element, I would like to know if it is an error or Represents both elements