bölek

/ bølek /

Cases

SingularPluralWhen to use it
nominative bölek the part bölekle the parts the plain dictionary form — the doer of the sentence
genitive bölekni the part's bölekleni the parts' the owner — whose it is
accusative bölekni the part (as the object) bölekleni the parts (as the object) a specific, known object — whom or what
dative bölekge to the part böleklege to the parts direction or recipient — to where, to whom
locative bölekde at / in the part böleklede at / in the parts where it is; also having — mende bar, "I have it"
ablative bölekden from the part bölekleden from the parts 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 bölegim my part böleklerim my parts
your bölegiŋ your part bölekleriŋ your parts
his / her bölegi his / her part bölekleri his / her parts
our bölegibiz our part bölekleribiz our parts
you all's bölegigiz you all's part böleklerigiz you all's parts
their bölekleri their part bölekleri their parts

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