The use of this Phoenician letter for just a vowel seem is as a result of early Greek alphabets, which adopted the letter "omicron" to depict the vowel /o/. The letter was adopted with the worth from the Aged Italic alphabets, such as the early Latin alphabet. Good Vocabulary: https://canalinfantil10988.bloggin-ads.com/60189342/canal-infantil-things-to-know-before-you-buy