skelet

/skelet/

Cases

SingularPluralWhen to use it
nominativeskeletthe skeletonskeletlethe skeletonsthe plain dictionary form — the doer of the sentence
genitiveskeletnithe skeleton'sskeletlenithe skeletons'the owner — whose it is
accusativeskeletnithe skeleton (as the object)skeletlenithe skeletons (as the object)a specific, known object — whom or what
dativeskeletgeto the skeletonskeletlegeto the skeletonsdirection or recipient — to where, to whom
locativeskeletdeat / in the skeletonskeletledeat / in the skeletonswhere it is; also having — mende bar, "I have it"
ablativeskeletdenfrom the skeletonskeletledenfrom the skeletonswhere 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
myskeletimmy skeletonskeletlerimmy skeletons
yourskeletingyour skeletonskeletleringyour skeletons
his / herskeletihis / her skeletonskeletlerihis / her skeletons
ourskeletibizour skeletonskeletleribizour skeletons
you all'sskeletigizyou all's skeletonskeletlerigizyou all's skeletons
theirskeletleritheir skeletonskeletleritheir skeletons

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