Greek alphabet from which the later standard Greek alphabet emerged. Athens used a local form of the "light blue" alphabet type until the end of the fifth century BC, which lacked the letters Ξ and Ψ as well as the vowel symbols Η and Ω. In the Old Attic alphabet, stood for and for . was used for all three sounds (correspondinɡ to classical respectively), and was used for all of (corresponding to classical respectively). The letter (heta) was used for the consonant . Some variant local letter forms were also characteristic of Athenian writing, some of which were shared with the
Albanian alphabet and Jani Vreto created an alphabet. This was based on the principle of "one sound one letter" (although the revision of 1908 replaced the letter "ρ" by the "rr" digraph to avoid confusion with "p"). This was called the "Istanbul alphabet" (also "Frashëri alphabet"). In 1905 this alphabet was in widespread use in all Albanian territory, North and South, including Catholic, Muslim and Orthodox areas. One year earlier, in 1904 had been published the Albanian dictionary () of Kostandin Kristoforidhi, after the author's death. The dictionary had been drafted 25 years before its publication and was written in the Greek