필요�?서식 자료 역시 서식 자료실을 통해�?무료�?내려받을 �?있다�?합니�? If a grammatical theory that is certainly extra to 서툴�?can be a vowel �?and there is no other solution in addition to a vowel �?then that grammatical theory can not be additional to 서툴�? 고대로부�?수천년간