High Quality Content by WIKIPEDIA articles Yotsugana (四つ仮名?, literally "four kana") refers to the four kana ジ, ヂ, ズ, ヅ (Nihon-shiki: zi, di, zu, du; Kunrei: zi, zi, zu, zu) of the Japanese language. Traditionally four distinct phonemes, currently they are either one, two, three, or four distinct phonemes depending on dialect. In the current dialect of Tokyo, it is two phonemes as represented...