Japanese poetry important Edo period (1603 and 1867, also known as "Tokugawa") and modern times; however, the history of poetry often is different than socio-political history. Since the middle of the 19th century, the major forms of Japanese poetry have been "tanka" (the modern name for "waka"), "haiku" and "shi" or western-style poetry. Today, the main forms of Japanese poetry include both experimental poetry and poetry that seeks to revive traditional ways. Poets writing in tanka, haiku and shi may seldom write poetry other than in their specific chosen form, although some active poets are eager to collaborate with poets in other
Haiku the 5-7-5 pattern. Although the word ""on"" is sometimes translated as "syllable", one "on" is counted for a short syllable, two for an elongated vowel or doubled consonant, and one for an "n" at the end of a syllable. Thus, the word "haibun", though counted as two syllables in English, is counted as four "on" in Japanese (ha-i-bu-n); and the word ""on"" itself, which English-speakers would view as a single syllable, comprises two "on": the short vowel o and the . This is illustrated by the Issa haiku below, which contains 17 "on" but only 15 syllables. Conversely, some sounds,