 Each main entry gives the word in "kanji" (Chinese characters), notes Japanese pronunciation in "katakana" on the right, and occasionally adds etymologies and comments on the bottom.There are numerous "Setsuyōshū" editions (over 180 from the Edo period) and many vary in content and format.Most versions collate words according to their first syllable under 43–47 "iroha" divisions ("bu" ) with 9–16 semantic subdivisions ("mon" ), which usually begin with "Heaven and Earth" ("Tenchi" 天地) and end with "Unclassified words" ("Genji" 言辞).