고지서를 받으�?송달지(실거주지)�?변경하실려�?서비스를 신청하여 주시�?바랍니다. If a grammatical theory that is certainly added to 서툴�?is really a vowel �?and there's no other alternative besides a vowel �?then that grammatical principle can't be extra to 서툴�? 상세하게 안내�?�