모든 콘텐�?기사)�?저작권법의 보호�?받는 �? 무단전재, 복사, 배포 등을 금합니다.If a grammatical basic principle that is certainly extra to 서툴�?can be a vowel �?and there is no other alternative aside from a vowel �?then that grammatical principle can not be included to 서툴�?위의 자료들을 근�