bölük

/bølyk/

Cases

SingularPluralWhen to use it
nominativebölükthe partbölüklethe partsthe plain dictionary form — the doer of the sentence
genitivebölüknüthe part'sbölüklenithe parts'the owner — whose it is
accusativebölüknüthe part (as the object)bölüklenithe parts (as the object)a specific, known object — whom or what
dativebölükgeto the partbölüklegeto the partsdirection or recipient — to where, to whom
locativebölükdeat / in the partbölükledeat / in the partswhere it is; also having — mende bar, "I have it"
ablativebölükdenfrom the partbölükledenfrom the partswhere 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
mybölügümmy partbölüklerimmy parts
yourbölügüngyour partbölükleringyour parts
his / herbölügühis / her partbölüklerihis / her parts
ourbölügübüzour partbölükleribizour parts
you all'sbölügügüzyou all's partbölüklerigizyou all's parts
theirbölükleritheir partbölükleritheir parts

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