jegen

/dʒeɡen/

Cases

SingularPluralWhen to use it
nominativejegenthe rush matjegenlethe rush matsthe plain dictionary form — the doer of the sentence
genitivejegennithe rush mat'sjegenlenithe rush mats'the owner — whose it is
accusativejegennithe rush mat (as the object)jegenlenithe rush mats (as the object)a specific, known object — whom or what
dativejegengeto the rush matjegenlegeto the rush matsdirection or recipient — to where, to whom
locativejegendeat / in the rush matjegenledeat / in the rush matswhere it is; also having — mende bar, "I have it"
ablativejegendenfrom the rush matjegenledenfrom the rush matswhere 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
myjegenimmy rush matjegenlerimmy rush mats
yourjegeningyour rush matjegenleringyour rush mats
his / herjegenihis / her rush matjegenlerihis / her rush mats
ourjegenibizour rush matjegenleribizour rush mats
you all'sjegenigizyou all's rush matjegenlerigizyou all's rush mats
theirjegenleritheir rush matjegenleritheir rush mats

The overlap in the last rows is real, not a mistake: jegenleri can mean "his / her rush mats", "their rush mat", or "their rush mats" — context decides.