I believe you missed Semjaza; the leader. What confuses me is Samizaz, their leader. I thought initially they were one-in-same, but going to the point that you bring up, that does not work mathematically. So, I conclude that they are two separate beings with leadership roles. Semjaza, I speculate to have supreme authority, while Samizaz has a more of that "right-hand man" authority. If anyone else has knowledge or thoughts, please help here as I am researching for a novel, and truly want to be as correct as possible.
