It is considered that the book in 15 volumes was the original version by Takaakira, but it does not exist, and the book in 10 volumes was widely known as the rufu-bon (widely circulated edition), which had been sorted out and added kanmotsu (annotation of a book) instead.
なお、15巻本が高明による原撰本と考えられているが現存せず、本文を整理して代わりに勘物などを充実させた10巻本が流布本として広く知られていた。