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 from the Old Italic alphabets, including the early Latin alphabet. Intelligent Vocabulary: related text and phrases https://trevorraejl.bloguetechno.com/the-fact-about-canal-infantil-that-no-one-is-suggesting-72509546