grammatika

/ɡrammatika/

Cases

SingularPluralWhen to use it
nominativegrammatikathe grammargrammatikalathe grammarsthe plain dictionary form — the doer of the sentence
genitivegrammatikanıthe grammar'sgrammatikalanıthe grammars'the owner — whose it is
accusativegrammatikanıthe grammar (as the object)grammatikalanıthe grammars (as the object)a specific, known object — whom or what
dativegrammatikağato the grammargrammatikalağato the grammarsdirection or recipient — to where, to whom
locativegrammatikadaat / in the grammargrammatikaladaat / in the grammarswhere it is; also having — mende bar, "I have it"
ablativegrammatikadanfrom the grammargrammatikaladanfrom the grammarswhere 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
mygrammatikammy grammargrammatikalarımmy grammars
yourgrammatikangyour grammargrammatikalarıngyour grammars
his / hergrammatikasıhis / her grammargrammatikalarıhis / her grammars
ourgrammatikabızour grammargrammatikalarıbızour grammars
you all'sgrammatikağızyou all's grammargrammatikalarığızyou all's grammars
theirgrammatikalarıtheir grammargrammatikalarıtheir grammars

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