Here's a quiz. (Not stupid, but silly) For people with very clever musical brains (scanning for patterns). It might not be possible for a musician to think like this.
Try to determine how these notes come out in this sequence. Just like with those math sequences when you try to determine the simple pattern and the next number, it's very simple when you understand what's going on.
augmented fifth or flat sixth
eleventh or sus4
and then the tonic again