kesek

/kesek/

Cases

SingularPluralWhen to use it
nominativekesekthe piecekeseklethe piecesthe plain dictionary form — the doer of the sentence
genitivekeseknithe piece'skeseklenithe pieces'the owner — whose it is
accusativekeseknithe piece (as the object)keseklenithe pieces (as the object)a specific, known object — whom or what
dativekesekgeto the piecekeseklegeto the piecesdirection or recipient — to where, to whom
locativekesekdeat / in the piecekesekledeat / in the pieceswhere it is; also having — mende bar, "I have it"
ablativekesekdenfrom the piecekesekledenfrom the pieceswhere 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
mykesegimmy piecekeseklerimmy pieces
yourkesegingyour piecekesekleringyour pieces
his / herkesegihis / her piecekeseklerihis / her pieces
ourkesegibizour piecekesekleribizour pieces
you all'skesegigizyou all's piecekeseklerigizyou all's pieces
theirkesekleritheir piecekesekleritheir pieces

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