by Stepan Smal-Stotskyi and Theodore Gartner 1893). Borys Hrinchenko used some corrections in the fundamental four-volume Dictionary of the Ukrainian Language (1907–1909). Most of the spelling rules (practically based on phonetics – "write as you hear") used in Hrinchenko's dictionary are still valid. Hrinchenko's work became an informal spelling and model for Ukrainian writers and publications from 1907 until the creation of the first official Ukrainian spelling in 1918. On January 17, 1918, the Central Rada of Ukraine issued the "Main Rules of Ukrainian orthography", which, however, did not cover the entire scope of the language. On May 17, 1919, the Ukrainian Academy of Sciences approved the "Main Rules of Ukrainian Orthography", which became the basis for all subsequent revisions and amendments. On July 23, 1925, the Council of People's Commissars of the USSR decided to organize a State Commission for the Organization of Ukrainian Spelling (State Spelling Commission). It included more than 20 academics from the USSR, who also expressed a desire to invite representatives of Western Ukraine: Stepan Smal-Stotskyi, Volodymyr Hnatiuk and Vasyl Simovych. After almost a year of work in April 1926, the "Project of Ukrainian Spelling" was published to acquaint the general public with the new system. After several months of discussion and consideration of the project at the All-Ukrainian Spelling Conference (May 26 – June 6, 1927), the Ukrainian orthography of 1928 was adopted in accordance with the RNC resolution of September 6, 1928. It went down in history as "Kharkiv" or "Skrypnik orthography" – from the place of creation, or from the surname of the People's Commissar of Education Mykola Skrypnyk. In 1929, Hryhorii Holoskevych published the Ukrainian Spelling Dictionary (about 40,000 words), agreed with the full spelling produced by the State Spelling Commission and approved by the People's Commissar for Education (September 6, 1928). In 1933, a spelling commission headed by Andrii Khvylia branded the Ukrainian orthography of 1928 as "nationalist", immediately stopped publishing any dictionaries, and without any discussion, in a very short time (five months), created a new spelling that unified as never before the Ukrainian and Russian languages. The letter ґ was removed from the alphabet, and Ukrainian scientific terminology was revised and harmonized with Russian-Ukrainian dictionaries (the Institute of Ukrainian Scientific Language was abolished in 1930). This version of the spelling was approved by the resolution of the People's Commissar of Education of the USSR of September 5, 1933.