Imatto-canna
Imatto-canna (also written Imatto canna or Jamatto canna) was a false Japanese syllabary reported by the German traveller Engelbert Kaempfer in his book Amoenitatum exoticarum politico-physico-medicarum fasciculi V. (1712). He wrote that Japan had three syllabaries: firo-canna (hiragana) and catta-canna (katakana), both used by commons, and imatto-canna, used by nobles.