The usage of this Phoenician letter for just a vowel seem is mainly because of the early Greek alphabets, which adopted the letter "omicron" to stand for the vowel /o/. The letter was adopted with the worth while in the Outdated Italic alphabets, such as the early Latin alphabet. https://jeffreyblquz.blogoxo.com/37373683/an-unbiased-view-of-musica-infantil