Anton Bernolák, a Catholic priest (1762-1813), published the "Dissertatio philologico-critica de litteris Slavorum" in 1787, in which he codifies a Slovak language standard that is based on the Western Slovak language of the University of Trnava but contains also some central Slovak elements, e.g. soft consonants "ď", "ť", "ň", "ľ" and many words. The orthography is strictly diacritical. The language is often called the Bernolák language. Bernolák continued his codification work in other books in the 1780s and 1790s and especially in his huge six-volume "Slovak-Czech-Latin-German-Hungarian Dictionary," in print from 1825–1927. In the 1820s, the Bernolák standard was revised, and Central Slovak elements were systematically replaced by their Western Slovak equivalents.