필요�?서식 자료 역시 서식 자료실을 통해�?무료�?내려받을 �?있다�?합니�? If a grammatical basic principle that is certainly added to 서툴�?is actually a vowel �?and there's no other option besides a vowel �?then that grammatical basic principle cannot be included to 서툴�? 나는 용기�?�