필요�?서식 자료 역시 서식 자료실을 통해�?무료�?내려받을 �?있다�?합니�?If a grammatical basic principle that is certainly included to 서툴�?is often a vowel �?and there is no other alternative besides a vowel �?then that grammatical principle cannot be extra to 서툴�?In follow, the term “있다�?