Books of Chronicles
Some books which are set apart in the Masoretic Text are grouped together. The Books of Samuel and the Books of Kings are one four-part book entitled Βασιλειῶν (Of Reigns) in the Septuagint. The Books of Chronicles supplement Reigns, known as Παραλειπομένων (Of Things Left Out). The Septuagint organizes the minor prophets in its twelve-part Book of Twelve.