ıstım

/ɯstɯm/

Cases

SingularPluralWhen to use it
nominativeıstımthe eighth night after a birthıstımlathe eighth night after a birthsthe plain dictionary form — the doer of the sentence
genitiveıstımnıthe eighth night after a birth'sıstımlanıthe eighth night after a births'the owner — whose it is
accusativeıstımnıthe eighth night after a birth (as the object)ıstımlanıthe eighth night after a births (as the object)a specific, known object — whom or what
dativeıstımğato the eighth night after a birthıstımlağato the eighth night after a birthsdirection or recipient — to where, to whom
locativeıstımdaat / in the eighth night after a birthıstımladaat / in the eighth night after a birthswhere it is; also having — mende bar, "I have it"
ablativeıstımdanfrom the eighth night after a birthıstımladanfrom the eighth night after a birthswhere 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
myıstımımmy eighth night after a birthıstımlarımmy eighth night after a births
yourıstımıngyour eighth night after a birthıstımlarıngyour eighth night after a births
his / herıstımıhis / her eighth night after a birthıstımlarıhis / her eighth night after a births
ourıstımıbızour eighth night after a birthıstımlarıbızour eighth night after a births
you all'sıstımığızyou all's eighth night after a birthıstımlarığızyou all's eighth night after a births
theirıstımlarıtheir eighth night after a birthıstımlarıtheir eighth night after a births

The overlap in the last rows is real, not a mistake: ıstımları can mean "his / her eighth night after a births", "their eighth night after a birth", or "their eighth night after a births" — context decides.