Nik Taylor wrote: > It certainly is possible. Japanese has quite a few vowel sequences, > including distinctions between forms like /aa/ and /a:/, altho that is > not distinguished in kana. There does, however, seem to be a slight > glottal constriction between identical vowels. Out of curiosity, I searched Google for "baai" (written +MNAwojCk-) and "ba:i" (written +MNAw/DCk-). "Baai" is normally written in kanji (+WDRUCA-), but Google found 10,900 instances of "baai" in katakana (+MNAwojCk-), and 16,500 instances of "ba:i" (11,200 in the word "baiba:i" +MNAwpDDQMPwwpA-).