soyuz

/sojuz/

Cases

SingularPluralWhen to use it
nominativesoyuzthe unionsoyuzlathe unionsthe plain dictionary form — the doer of the sentence
genitivesoyuznuthe union'ssoyuzlanıthe unions'the owner — whose it is
accusativesoyuznuthe union (as the object)soyuzlanıthe unions (as the object)a specific, known object — whom or what
dativesoyuzğato the unionsoyuzlağato the unionsdirection or recipient — to where, to whom
locativesoyuzdaat / in the unionsoyuzladaat / in the unionswhere it is; also having — mende bar, "I have it"
ablativesoyuzdanfrom the unionsoyuzladanfrom the unionswhere 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
mysoyuzummy unionsoyuzlarımmy unions
yoursoyuzungyour unionsoyuzlarıngyour unions
his / hersoyuzuhis / her unionsoyuzlarıhis / her unions
oursoyuzubuzour unionsoyuzlarıbızour unions
you all'ssoyuzuğuzyou all's unionsoyuzlarığızyou all's unions
theirsoyuzlarıtheir unionsoyuzlarıtheir unions

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