jün

/dʒyn/

Cases

SingularPluralWhen to use it
nominativejünthe wooljünlethe woolsthe plain dictionary form — the doer of the sentence
genitivejünnüthe wool'sjünlenithe wools'the owner — whose it is
accusativejünnüthe wool (as the object)jünlenithe wools (as the object)a specific, known object — whom or what
dativejüngeto the wooljünlegeto the woolsdirection or recipient — to where, to whom
locativejündeat / in the wooljünledeat / in the woolswhere it is; also having — mende bar, "I have it"
ablativejündenfrom the wooljünledenfrom the woolswhere 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
myjünümmy wooljünlerimmy wools
yourjününgyour wooljünleringyour wools
his / herjünühis / her wooljünlerihis / her wools
ourjünübüzour wooljünleribizour wools
you all'sjünügüzyou all's wooljünlerigizyou all's wools
theirjünleritheir wooljünleritheir wools

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