There are names and words made of two or more kanji, such as 東京 とうきょう tōkyō, 大阪 おおさか ōsaka, and 京都 きょうと kyōto.
Sometimes the second kanji becomes dakuon, and sometimes the first kanji gets a sokuon. But when exactly do they happen, and when do they not happen? For example,
- Why is 東京 tōkyō not とっきょう tokkyō or とうぎょう tōgyō?
- Why is 福島 fukushima not ふっしま fusshima or ふくじま fukujima?
- Why is 京都 kyōto not きょっと kyotto or きょうど kyōdo?
- Why is 北海道 hokkaidō not ほくかいどう hokukaidō or ほくがいどう hokugaidō?
- Why is 山形 yamagata not やまかた yamakata?
by Thunderweb