bilewçü

/ bilewtʃy /

Cases

SingularPluralWhen to use it
nominative bilewçü the one who sharpens bilewçüle the one who sharpenses the plain dictionary form — the doer of the sentence
genitive bilewçünü the one who sharpens' bilewçüleni the one who sharpenses' the owner — whose it is
accusative bilewçünü the one who sharpens (as the object) bilewçüleni the one who sharpenses (as the object) a specific, known object — whom or what
dative bilewçüge to the one who sharpens bilewçülege to the one who sharpenses direction or recipient — to where, to whom
locative bilewçüde at / in the one who sharpens bilewçülede at / in the one who sharpenses where it is; also having — mende bar, "I have it"
ablative bilewçüden from the one who sharpens bilewçüleden from the one who sharpenses 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 bilewçüm my one who sharpens bilewçülerim my one who sharpenses
your bilewçüŋ your one who sharpens bilewçüleriŋ your one who sharpenses
his / her bilewçüsü his / her one who sharpens bilewçüleri his / her one who sharpenses
our bilewçübüz our one who sharpens bilewçüleribiz our one who sharpenses
you all's bilewçügüz you all's one who sharpens bilewçülerigiz you all's one who sharpenses
their bilewçüleri their one who sharpens bilewçüleri their one who sharpenses

The overlap in the last rows is real, not a mistake: bilewçüleri can mean "his / her one who sharpenses", "their one who sharpens", or "their one who sharpenses" — context decides.