Editing Old Prussian language (section)

====Cases====
There is no consensus on the number of [[case (grammar)|cases]] that Old Prussian had, and at least four can be determined with certainty: nominative, genitive, accusative and dative, with different [[suffix]]es.{{r|Berneker|pages=171{{Hyphen}}197}}{{r|Dini|page=356}}{{r|HGOP|page=40}} Most scholars agree, that there are traces of a [[vocative case]], such as in the phrase ''{{lang|prg|O Deiwe Rikijs}}'' 'O God the Lord', reflecting the inherited [[Proto-Indo-European language|PIE]] vocative ending *''{{PIE|-e}}'',{{r|Berneker|pages=251}}{{r|Rinkevicius|page=109}} differing from nominative forms in o-stem nouns only.{{r|Dini|page=356}}

Some scholars find instrumental forms,{{r|Berneker|page=197}} while the traditional view is that no instrumental case existed in Old Prussian.{{r|Dini|page=356}} There could be some locative forms, e.g. {{lang|prg|bītai}} ('in the evening').{{r|Dini|page=356}}<ref>{{cite book |last1=Mažiulis |first1=Vytautas |author-link=Vytautas Mažiulis |title=Prūsų kalbos etimologijos žodynas |date=1988 |publisher=Mokslas |location=Vilnius |page=144 |edition=1 |language=lt |volume=1 |trans-title=Etymological Dictionary of Old Prussian }}</ref>