gun

/ɡun/

Cases

SingularPluralWhen to use it
nominativegunthe Hungunlathe Hunsthe plain dictionary form — the doer of the sentence
genitivegunnuthe Hun'sgunlanıthe Huns'the owner — whose it is
accusativegunnuthe Hun (as the object)gunlanıthe Huns (as the object)a specific, known object — whom or what
dativegungato the Hungunlağato the Hunsdirection or recipient — to where, to whom
locativegundaat / in the Hungunladaat / in the Hunswhere it is; also having — mende bar, "I have it"
ablativegundanfrom the Hungunladanfrom the Hunswhere 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
mygunummy Hungunlarımmy Huns
yourgunungyour Hungunlarıngyour Huns
his / hergunuhis / her Hungunlarıhis / her Huns
ourgunubuzour Hungunlarıbızour Huns
you all'sgunuğuzyou all's Hungunlarığızyou all's Huns
theirgunlarıtheir Hungunlarıtheir Huns

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