Haiku such as "kyo" () may look like two syllables to English speakers but are in fact a single "on" (as well as a single syllable) in Japanese. In 1973, the Haiku Society of America noted that the norm for writers of haiku in English was to use 17 syllables, but they also noted a trend toward shorter haiku. Shorter haiku are very much more common in 21st century English haiku writing. Some translators of Japanese poetry have noted that about 12 syllables in English approximate the duration of 17 Japanese "on". Also in translations four lines is more appropriate for
Old Japanese line of the first poem in the "Kojiki" was written with five characters: This method of writing Japanese syllables by using characters for their Chinese sounds ("ongana") was supplemented with indirect methods in the complex mixed script of the "Man'yōshū" (c. 759). In "man'yōgana", each Old Japanese syllable was represented by a Chinese character. Although any one of several characters could be used for a given syllable, a careful analysis revealed that 88 syllables were distinguished in the "Kojiki": The system has the same gaps of "yi" and "wu" found in later forms of Japanese. However, many syllables that have