section_path: Forms/Haiku
section_name: Haiku
paragraph_text: Haiku
  
  Haiku is a popular form of unrhymed Japanese poetry, which evolved in the 17th century from the hokku, or opening verse of a renku. Generally written in a single vertical line, the haiku contains three sections totalling 17 on (morae), structured in a 5–7–5 pattern. Traditionally, haiku contain a kireji, or cutting word, usually placed at the end of one of the poem's three sections, and a kigo, or season-word. The most famous exponent of the haiku was Matsuo Bashō (1644–1694). An example of his writing: