jelke

/dʒelke/

Cases

SingularPluralWhen to use it
nominativejelkethe napejelkelethe napesthe plain dictionary form — the doer of the sentence
genitivejelkenithe nape'sjelkelenithe napes'the owner — whose it is
accusativejelkenithe nape (as the object)jelkelenithe napes (as the object)a specific, known object — whom or what
dativejelkegeto the napejelkelegeto the napesdirection or recipient — to where, to whom
locativejelkedeat / in the napejelkeledeat / in the napeswhere it is; also having — mende bar, "I have it"
ablativejelkedenfrom the napejelkeledenfrom the napeswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
myjelkemmy napejelkelerimmy napes
yourjelkengyour napejelkeleringyour napes
his / herjelkesihis / her napejelkelerihis / her napes
ourjelkebizour napejelkeleribizour napes
you all'sjelkegizyou all's napejelkelerigizyou all's napes
theirjelkeleritheir napejelkeleritheir napes

The overlap in the last rows is real, not a mistake: jelkeleri can mean "his / her napes", "their nape", or "their napes" — context decides.