Hachidaishū
The Hachidaishū are the first eight imperial anthologies of Japanese waka poetry, of which the first three collections are the Sandaishū. The Sandaishū provided both the language and organizational principles for the rest of the anthologies thereafter. They are:Kokin WakashūGosen WakashūShūi WakashūGoshūi WakashūKin'yō WakashūShika WakashūSenzai Wakashū