 This arrangement combines both "Iroha Jiruishō" phonetic ordering and "Kagakushū" semantic classifications.The Japanese linguist Hashimoto Shinkichi analyzed differences among early "Setsuyōshū" editions and found three categories, distinguished by the first word beginning with "i"- appearing under the first '"Heaven and Earth" heading.The dictionaries' initial word is either "Ise" (伊勢 "old name for Mie Prefecture"), "Indo" (印度 "India"), or "inui" (乾 "northwest").