Using this Phoenician letter for just a vowel seem is because of the early Greek alphabets, which adopted the letter "omicron" to symbolize the vowel /o/. The letter was adopted with the value while in the Outdated Italic alphabets, such as the early Latin alphabet. Good Vocabulary: related terms https://sapinhopulapula76653.blogunteer.com/36029632/everything-about-o-sapinho-e-a-borboleta