The Lesser Key of Solomon or Lemegeton, is an anonymous grimoire on demonology. It was compiled in the mid-17th century, mostly from materials a couple of centuries older and is divided into five books.
There are a total of Seventy-Two Demons listed in the Ars Goetia, commanded by the four kings of the cardinal directions. With one of the demons listed (Gaap) being both; one of the four kings and a member of 72 demons.
Four kings of the cardinal directions
Amaymon (East), Corson (West), Ziminiar (North), and Gaap (South)
Seventy-Two Demons
Baal, Agares, Vassago, Gamigin, Barbas, Valefar, Aamon, Barbatos, Paimon, Buer, Gusion, Sitri, Beleth, Leraje, Eligos, Zepar, Botis, Bathin, Saleos, Purson, Morax, Ipos, Aim, Naberius, Glasya-Labolas, Bune, Ronove, Berith, Astaroth, Forneus, Foras, Asmodai, Gaap, Furfur, Marchosias, Stolas, Phenex, Halphas, Malphas, Raum, Focalor, Vepar, Sabnock, Shax, Vine, Bifrons, Vual, Haagenti, Crocell, Furcas, Balam, Allocer, Caim, Murmur, Orobas, Gremory, Ose, Amy, Orias, Vapula, Zagan, Valac, Andras, Flauros, Andrealphus, Kimaris, Amdusias, Belial, Decarabia, Seir, Dantalion, Andromalius.