kez

/kez/

Cases

SingularPluralWhen to use it
nominativekezthe notchkezlethe notchesthe plain dictionary form — the doer of the sentence
genitivekeznithe notch'skezlenithe notches'the owner — whose it is
accusativekeznithe notch (as the object)kezlenithe notches (as the object)a specific, known object — whom or what
dativekezgeto the notchkezlegeto the notchesdirection or recipient — to where, to whom
locativekezdeat / in the notchkezledeat / in the notcheswhere it is; also having — mende bar, "I have it"
ablativekezdenfrom the notchkezledenfrom the notcheswhere 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
mykezimmy notchkezlerimmy notches
yourkezingyour notchkezleringyour notches
his / herkezihis / her notchkezlerihis / her notches
ourkezibizour notchkezleribizour notches
you all'skezigizyou all's notchkezlerigizyou all's notches
theirkezleritheir notchkezleritheir notches

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