Korean Basic Vowels - The Easy Guide Hello all. I made a basic Open Office Impress (Open Office's version of Power Point) lesson on the four basic Korean vowels of ㅜ ㅗ ㅏ and ㅓ. Lots of people in the very beginning have trouble differentiating between these basic vowels. It's got a written pronunciation guide and also audio so check it out. http://ryogahouse.wordpress.com/language-study/korean/basic-korean-lessons/