egiz

/eɡiz/

Cases

SingularPluralWhen to use it
nominativeegizthe twinegizlethe twinsthe plain dictionary form — the doer of the sentence
genitiveegiznithe twin'segizlenithe twins'the owner — whose it is
accusativeegiznithe twin (as the object)egizlenithe twins (as the object)a specific, known object — whom or what
dativeegizgeto the twinegizlegeto the twinsdirection or recipient — to where, to whom
locativeegizdeat / in the twinegizledeat / in the twinswhere it is; also having — mende bar, "I have it"
ablativeegizdenfrom the twinegizledenfrom the twinswhere 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
myegizimmy twinegizlerimmy twins
youregizingyour twinegizleringyour twins
his / heregizihis / her twinegizlerihis / her twins
ouregizibizour twinegizleribizour twins
you all'segizigizyou all's twinegizlerigizyou all's twins
theiregizleritheir twinegizleritheir twins

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