4th (n stem) Declension, femenine
case singular plural
Nominative Env-4-f {{{2}}}er
Accusative Env-4-f {{{2}}}er
Genitive {{{1}}}s {{{2}}}e
Dative {{{1}}}e {{{2}}}u
Instrumental1 {{{2}}}u {{{2}}}u

1Rare, only used in some set phrases