duma

/duma/

Cases

SingularPluralWhen to use it
nominativedumathe Dumadumalathe Dumasthe plain dictionary form — the doer of the sentence
genitivedumanıthe Duma'sdumalanıthe Dumas'the owner — whose it is
accusativedumanıthe Duma (as the object)dumalanıthe Dumas (as the object)a specific, known object — whom or what
dativedumağato the Dumadumalağato the Dumasdirection or recipient — to where, to whom
locativedumadaat / in the Dumadumaladaat / in the Dumaswhere it is; also having — mende bar, "I have it"
ablativedumadanfrom the Dumadumaladanfrom the Dumaswhere 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
mydumammy Dumadumalarımmy Dumas
yourdumangyour Dumadumalarıngyour Dumas
his / herdumasıhis / her Dumadumalarıhis / her Dumas
ourdumabızour Dumadumalarıbızour Dumas
you all'sdumağızyou all's Dumadumalarığızyou all's Dumas
theirdumalarıtheir Dumadumalarıtheir Dumas

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