The Third Level of Self-Elaboration arises from the 192 gaps between the 192 Suktas of the first Mandala, which give rise to the 192 Suktas of the tenth Mandala.
Looking at the illustration again, we see that between the first two Suktas of the first Mandala, emerges the 1st Sukta of the tenth Mandala. Between the 2nd and 3rd Sukta, arises Sukta 2 of the tenth Mandala.
In this fashion, the entire 192 Suktas of the tenth Mandala emerge from the gaps between the 192 Suktas of the first Mandala.
In the fourth level of self-elaboration, we will see how the gaps between Richa 2 to 9 of the first Sukta are elaborated in Mandal 2-9 of Rk Veda.