kömür

/ kømyr /

Cases

SingularPluralWhen to use it
nominative kömür the coal kömürle the coals the plain dictionary form — the doer of the sentence
genitive kömürnü the coal's kömürleni the coals' the owner — whose it is
accusative kömürnü the coal (as the object) kömürleni the coals (as the object) a specific, known object — whom or what
dative kömürge to the coal kömürlege to the coals direction or recipient — to where, to whom
locative kömürde at / in the coal kömürlede at / in the coals where it is; also having — mende bar, "I have it"
ablative kömürden from the coal kömürleden from the coals 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
my kömürüm my coal kömürlerim my coals
your kömürüŋ your coal kömürleriŋ your coals
his / her kömürü his / her coal kömürleri his / her coals
our kömürübüz our coal kömürleribiz our coals
you all's kömürügüz you all's coal kömürlerigiz you all's coals
their kömürleri their coal kömürleri their coals

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