Chiastic literary structure of the Book of Daniel

The chiastic literary structure of the Book of Daniel is that of a double chiasm encompassed by an overarch (1:1-21 <--> 12:5-13):

A (2) — vision shown by God to Nebuchadnezzar of four earthly kingdoms replaced by God's eternal dominion

B (3:1-4:3) — trial and deliverance of Daniel's three friends in Babylon

C (4:4-33) — (partially consequential) judgment upon the king of Babylon, Nebuchadnezzar

D (4:34-37) — Babylonian king Nebuchadnezzar blesses, honors, and extols the LORD of Hosts

C' (5) — (fully consequential) judgment upon the king of Babylon, Belshazzar

B' (6) — trial and deliverance of Daniel in Medo-Persia

A' (7) — vision shown by God to Daniel of four earthly kingdoms replaced by God's eternal dominion

A (8:1-14) — vision of Medo-Persia and Greece, introductory glimpse into the latter's fourfold-divided empire(s)

B (8:15-27) — the angel Gabriel explains the vision to Daniel the Prophet

C (9:1-19) — Daniel fasts and mourns

D (9:20-27) — Gabriel explains the final 70 symbolic weeks of probation for the Jewish nation and anointing of the Messiah

C' (10:1-3) — Daniel fasts and mourns

B' (10:4-21) — the angel Gabriel explains the vision to Daniel the Prophet

A' (11:1-12:4) — vision of Medo-Persia and Greece, expansive focus on the latter's fourfold-divided empire(s)