김연아 선수�?모든 대한민�?국민들이 좋아하는 스포�?영웅�?같은 선수예요 If a grammatical principle that is definitely included to 서툴�?is actually a vowel �?and there's no other alternative other than a vowel �?then that grammatical principle cannot be extra to 서툴�? If a grammatical princip