모든 콘텐�?기사)�?저작권법의 보호�?받는 �? 무단전재, 복사, 배포 등을 금합니다. If a grammatical basic principle that may be included to 서툴�?is really a vowel �?and there's no other option besides a vowel �?then that grammatical basic principle cannot be additional to 서툴�? *도난�?경