Breakout rooms: "phantom" rooms or co-hosts included?

I was co-hosting a Zoom with three other people.  We set up breakout rooms for pairs at random, and 11 rooms were created, but Rooms 2 and 9 weren't showing up.  With the pairs randomly assigned, were the four co-hosts assigned to rooms?  We were having some technical issues so I'm not sure if there was a total of 26 attendees and four were dropped from the meeting, or it was only a total of 22.