Japanese poetic forms

thumb|A poetry card from the card game version of the Ogura Hyakunin Isshu, a compilation of tanka

Renga (, linked poem) is a genre of Japanese collaborative poetry in which alternating stanzas, or ku (句), of 5-7-5 and 7-7 morae (sound units or syllables per line) are linked in succession by multiple poets. Known as tsukuba no michi ( The Way of Tsukuba) after the famous Tsukuba Mountain in the Kantō region, the form of poetry is said to have originated in a two-verse poetry exchange by Yamato Takeru and later gave birth to the genres haikai () and haiku ().

Gogyohka () is a five-line, untitled, Japanese poetic form. Unlike tanka (57577 syllables), Gogyohka has no restrictions on line length.