kep

/kep/

Cases

SingularPluralWhen to use it
nominativekepthe mouldkeplethe mouldsthe plain dictionary form — the doer of the sentence
genitivekepnithe mould'skeplenithe moulds'the owner — whose it is
accusativekepnithe mould (as the object)keplenithe moulds (as the object)a specific, known object — whom or what
dativekepgeto the mouldkeplegeto the mouldsdirection or recipient — to where, to whom
locativekepdeat / in the mouldkepledeat / in the mouldswhere it is; also having — mende bar, "I have it"
ablativekepdenfrom the mouldkepledenfrom the mouldswhere 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
mykebimmy mouldkeplerimmy moulds
yourkebingyour mouldkepleringyour moulds
his / herkebihis / her mouldkeplerihis / her moulds
ourkebibizour mouldkepleribizour moulds
you all'skebigizyou all's mouldkeplerigizyou all's moulds
theirkepleritheir mouldkepleritheir moulds

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