tiek

/tiek/

Cases

SingularPluralWhen to use it
nominativetiekthe keytieklethe keysthe plain dictionary form — the doer of the sentence
genitivetieknithe key'stieklenithe keys'the owner — whose it is
accusativetieknithe key (as the object)tieklenithe keys (as the object)a specific, known object — whom or what
dativetiekgeto the keytieklegeto the keysdirection or recipient — to where, to whom
locativetiekdeat / in the keytiekledeat / in the keyswhere it is; also having — mende bar, "I have it"
ablativetiekdenfrom the keytiekledenfrom the keyswhere 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
mytiegimmy keytieklerimmy keys
yourtiegingyour keytiekleringyour keys
his / hertiegihis / her keytieklerihis / her keys
ourtiegibizour keytiekleribizour keys
you all'stiegigizyou all's keytieklerigizyou all's keys
theirtiekleritheir keytiekleritheir keys

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