ekspert

/ekspert/

Cases

SingularPluralWhen to use it
nominativeekspertthe expertekspertlethe expertsthe plain dictionary form — the doer of the sentence
genitiveekspertnithe expert'sekspertlenithe experts'the owner — whose it is
accusativeekspertnithe expert (as the object)ekspertlenithe experts (as the object)a specific, known object — whom or what
dativeekspertgeto the expertekspertlegeto the expertsdirection or recipient — to where, to whom
locativeekspertdeat / in the expertekspertledeat / in the expertswhere it is; also having — mende bar, "I have it"
ablativeekspertdenfrom the expertekspertledenfrom the expertswhere 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
myekspertimmy expertekspertlerimmy experts
yourekspertingyour expertekspertleringyour experts
his / herekspertihis / her expertekspertlerihis / her experts
ourekspertibizour expertekspertleribizour experts
you all'sekspertigizyou all's expertekspertlerigizyou all's experts
theirekspertleritheir expertekspertleritheir experts

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