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
Letters of the Living Abjad numerals system the letters of the Arabic alphabet are assigned numerical values. The Arabic letters h ح and y ي, which compose the Arabic singular adjective meaning "living" in the phrase Letters of the Living, add up to 18, and therefore the phrase "Letters of the Living" refers to the number 18. There is a similar symbolism about the numerical value of the corresponding Hebrew word in Judaism. The Báb referred to the 18 Letters of the Living, along with himself, as the first "Váḥid" of the Bayán Dispensation. In the Abjad numerical value of the word Wáḥid (واحد)