köt

/køt/

Cases

SingularPluralWhen to use it
nominativekötthe backkötlethe backsthe plain dictionary form — the doer of the sentence
genitivekötnüthe back'skötlenithe backs'the owner — whose it is
accusativekötnüthe back (as the object)kötlenithe backs (as the object)a specific, known object — whom or what
dativekötgeto the backkötlegeto the backsdirection or recipient — to where, to whom
locativekötdeat / in the backkötledeat / in the backswhere it is; also having — mende bar, "I have it"
ablativekötdenfrom the backkötledenfrom the backswhere 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
mykötümmy backkötlerimmy backs
yourkötüngyour backkötleringyour backs
his / herkötühis / her backkötlerihis / her backs
ourkötübüzour backkötleribizour backs
you all'skötügüzyou all's backkötlerigizyou all's backs
theirkötleritheir backkötleritheir backs

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