Hello. You will find some information on this phenomenon in the article Intervocalic alveolar flapping. FilipeS (talk) 12:21, 15 June 2008 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2008-06-15T12:21:00.000Z","author":"FilipeS","type":"comment","level":1,"id":"c-FilipeS-2008-06-15T12:21:00.000Z-American_English_pronunciation","replies":[]}}-->