oba

/oba/

Cases

SingularPluralWhen to use it
nominativeobathe graveobalathe gravesthe plain dictionary form — the doer of the sentence
genitiveobanıthe grave'sobalanıthe graves'the owner — whose it is
accusativeobanıthe grave (as the object)obalanıthe graves (as the object)a specific, known object — whom or what
dativeobağato the graveobalağato the gravesdirection or recipient — to where, to whom
locativeobadaat / in the graveobaladaat / in the graveswhere it is; also having — mende bar, "I have it"
ablativeobadanfrom the graveobaladanfrom the graveswhere 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
myobammy graveobalarımmy graves
yourobangyour graveobalarıngyour graves
his / herobasıhis / her graveobalarıhis / her graves
ourobabızour graveobalarıbızour graves
you all'sobağızyou all's graveobalarığızyou all's graves
theirobalarıtheir graveobalarıtheir graves

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