iegi

/ieɡi/

Cases

SingularPluralWhen to use it
nominativeiegithe ribiegilethe ribsthe plain dictionary form — the doer of the sentence
genitiveieginithe rib'siegilenithe ribs'the owner — whose it is
accusativeieginithe rib (as the object)iegilenithe ribs (as the object)a specific, known object — whom or what
dativeiegigeto the ribiegilegeto the ribsdirection or recipient — to where, to whom
locativeiegideat / in the ribiegiledeat / in the ribswhere it is; also having — mende bar, "I have it"
ablativeiegidenfrom the ribiegiledenfrom the ribswhere 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
myiegimmy ribiegilerimmy ribs
youriegingyour ribiegileringyour ribs
his / heriegisihis / her ribiegilerihis / her ribs
ouriegibizour ribiegileribizour ribs
you all'siegigizyou all's ribiegilerigizyou all's ribs
theiriegileritheir ribiegileritheir ribs

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