The majority of Babylonian epics are organized according to the same narrative structure: the story is divided into two acts, where the second act mirrors and expands the first. The essay shows that this structure applies to Atra-hasis, Enuma Elish, Gilgamesh, Etana, and more, for a total of nine texts.
“The two-act structure: A narrative device in Akkadian epics,” Journal of Ancient Near Eastern Religions, vol. 20, no. 2 (2020 [April 2021]), p. 190–224. Link.