rudnik

/rudnik/

Cases

SingularPluralWhen to use it
nominativerudnikthe minerudniklethe minesthe plain dictionary form — the doer of the sentence
genitiverudniknithe mine'srudniklenithe mines'the owner — whose it is
accusativerudniknithe mine (as the object)rudniklenithe mines (as the object)a specific, known object — whom or what
dativerudnikgeto the minerudniklegeto the minesdirection or recipient — to where, to whom
locativerudnikdeat / in the minerudnikledeat / in the mineswhere it is; also having — mende bar, "I have it"
ablativerudnikdenfrom the minerudnikledenfrom the mineswhere 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
myrudnigimmy minerudniklerimmy mines
yourrudnigingyour minerudnikleringyour mines
his / herrudnigihis / her minerudniklerihis / her mines
ourrudnigibizour minerudnikleribizour mines
you all'srudnigigizyou all's minerudniklerigizyou all's mines
theirrudnikleritheir minerudnikleritheir mines

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