sibirtki

/sibirtki/

Cases

SingularPluralWhen to use it
nominativesibirtkithe besomsibirtkilethe besomsthe plain dictionary form — the doer of the sentence
genitivesibirtkinithe besom'ssibirtkilenithe besoms'the owner — whose it is
accusativesibirtkinithe besom (as the object)sibirtkilenithe besoms (as the object)a specific, known object — whom or what
dativesibirtkigeto the besomsibirtkilegeto the besomsdirection or recipient — to where, to whom
locativesibirtkideat / in the besomsibirtkiledeat / in the besomswhere it is; also having — mende bar, "I have it"
ablativesibirtkidenfrom the besomsibirtkiledenfrom the besomswhere 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
mysibirtkimmy besomsibirtkilerimmy besoms
yoursibirtkingyour besomsibirtkileringyour besoms
his / hersibirtkisihis / her besomsibirtkilerihis / her besoms
oursibirtkibizour besomsibirtkileribizour besoms
you all'ssibirtkigizyou all's besomsibirtkilerigizyou all's besoms
theirsibirtkileritheir besomsibirtkileritheir besoms

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