is also the imperative mood. The conditional mood has two more tenses: the first conditional (commonly used in conditional clauses, both for possible and impossible conditional clauses) and the second conditional (without use in the spoken language—it should be used for impossible conditional clauses). Serbian has active and passive voice. As for the non-finite verb forms, Serbian has one infinitive, two adjectival participles (the active and the passive), and two adverbial participles (the present and the past). Vocabulary Most Serbian words are of native Slavic lexical stock, tracing back to the Proto-Slavic language. There are many loanwords from different languages, reflecting cultural interaction throughout history. Notable loanwords were borrowed from Greek, Latin, Italian, Turkish, Hungarian, English, Russian, German, Czech and French. Serbian literature Serbian literature emerged in the Middle Ages, and included such works as Miroslavljevo jevanđelje (Miroslav's Gospel) in 1186 and Dušanov zakonik (Dušan's Code) in 1349. Little secular medieval literature has been preserved, but what there is shows that it was in accord with its time; for example, the Serbian Alexandride, a book about Alexander the Great, and a translation of Tristan and Iseult into Serbian. Although not belonging to the literature proper, the corpus of Serbian literacy in the 14th and 15th centuries contains numerous legal, commercial and administrative texts with marked presence of Serbian vernacular juxtaposed on the matrix of Serbian Church Slavonic. By the beginning of the 14th century the Serbo-Croatian language, which was so rigorously proscribed by earlier local laws, becomes the dominant language of the Republic of Ragusa. However, despite her wealthy citizens speaking the Serbo-Croatian dialect of Dubrovnik in their family circles, they sent their children to Florentine schools to become perfectly fluent in Italian. Since the beginning of the 13th century, the entire official correspondence of Dubrovnik with states in the hinterland was conducted in Serbian. In the mid-15th century, Serbia was conquered by the Ottoman Empire and for the next 400 years there was no opportunity for the creation of secular written literature. However, some of the greatest literary works in Serbian come from this time, in the form of oral literature, the most notable form being epic poetry. The epic poems were mainly written down in the 19th century, and preserved in oral tradition up to the 1950s, a few centuries or even a millennium longer than by most other "epic folks". Goethe and Jacob Grimm learned Serbian in