 The first and second person plural forms ήμαστε and ήσαστε appear very rarely in the spoken language.The Greek nominal system displays inflection for two numbers (singular and plural), three genders (masculine, feminine and neuter), and four cases (nominative, genitive, accusative and vocative).As in many other Indo-European languages, the distribution of grammatical gender across nouns is largely arbitrary and need not coincide with natural sex.