History of the alphabet many letters the Proto-Sinaitic alphabet had nor what their alphabetic order was. Among its descendants, the Ugaritic alphabet had 27 consonants, the South Arabian alphabets had 29, and the Phoenician alphabet 22. These scripts were arranged in two orders, an "ABGDE" order in Phoenician and an "HMĦLQ" order in the south; Ugaritic preserved both orders. Both sequences proved remarkably stable among the descendants of these scripts. The letter names proved stable among the many descendants of Phoenician, including Samaritan, Aramaic, Syriac, Arabic, Hebrew, and Greek alphabet. However, they were largely abandoned in Tifinagh, Latin and Cyrillic. The letter sequence continued
Hebrew alphabet with a niqqud symbol – a vowel diacritic (whether or not the diacritic is marked), whereas and ע are considered to be mute, their role being purely indicative of the non-marked vowel. "Niqqud" is the system of dots that help determine vowels and consonants. In Hebrew, all forms of "niqqud" are often omitted in writing, except for children's books, prayer books, poetry, foreign words, and words which would be ambiguous to pronounce. Israeli Hebrew has five vowel phonemes, , but many more written symbols for them: By adding a vertical line (called "Meteg") underneath the letter and to the left