gradually /ˈgræʤuəli/ /ˈɡrædʒuəli/
slowly /ˈsloʊ.li/ /ˈsləʊli/
bit by bit /bɪt baɪ bɪt/ /bɪt baɪ bɪt/
little by little /lˈɪɾəl baɪ lˈɪɾəl/ /lˈɪtəl baɪ lˈɪtəl/