However, if we examine all these ten in relation to another phenomenon found in Zeir Anpin – his encompassing lights – we find that these ten (Netzach-Hod-Yesod as they divide up into the Ten Sefirot of the interior lights) are only one part of a single whole entity: the Ten Sefirot of the overall Mental Powers, which divide into two parts. This entity as a whole is the crowning adornment (עטרת, ateret) that Zeir Anpin receives from Abba or Imma.
The two parts of which it consists are the Interior and Encompassing Mental Powers. When we take them together as two parts of the one overall entity, we divide the entire entity into only Ten Sefirot, whose Netzach-Hod-Yesod then divide up in turn into the Ten Sefirot that actually enter into Zeir Anpin, while its Chochmah-Binah-Daat and Chessed-Gevurah-Tiferet remain outside.