arend

/arend/

Cases

SingularPluralWhen to use it
nominativearendthe leasearendlethe leasesthe plain dictionary form — the doer of the sentence
genitivearendnithe lease'sarendlenithe leases'the owner — whose it is
accusativearendnithe lease (as the object)arendlenithe leases (as the object)a specific, known object — whom or what
dativearendgeto the leasearendlegeto the leasesdirection or recipient — to where, to whom
locativearenddeat / in the leasearendledeat / in the leaseswhere it is; also having — mende bar, "I have it"
ablativearenddenfrom the leasearendledenfrom the leaseswhere 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
myarendimmy leasearendlerimmy leases
yourarendingyour leasearendleringyour leases
his / herarendihis / her leasearendlerihis / her leases
ourarendibizour leasearendleribizour leases
you all'sarendigizyou all's leasearendlerigizyou all's leases
theirarendleritheir leasearendleritheir leases

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