L-vocalization may set off far more mergers, to make sure that e.g. wire /?k??rd/ and called /?k??ld/ might be homophonous as /?k??d/ in non-rhotic dialects of South East England. See English-language vowel changes just before historic /l/ For more info.In Northern Eire, Scotland and plenty of North American dialects the distinction concerning /?r/