qayıtıwçu

/ qajɯtɯwtʃu /

Cases

SingularPluralWhen to use it
nominative qayıtıwçu the one who returns qayıtıwçula the one who returnses the plain dictionary form — the doer of the sentence
genitive qayıtıwçunu the one who returns' qayıtıwçulanı the one who returnses' the owner — whose it is
accusative qayıtıwçunu the one who returns (as the object) qayıtıwçulanı the one who returnses (as the object) a specific, known object — whom or what
dative qayıtıwçuğa to the one who returns qayıtıwçulağa to the one who returnses direction or recipient — to where, to whom
locative qayıtıwçuda at / in the one who returns qayıtıwçulada at / in the one who returnses where it is; also having — mende bar, "I have it"
ablative qayıtıwçudan from the one who returns qayıtıwçuladan from the one who returnses 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 qayıtıwçum my one who returns qayıtıwçularım my one who returnses
your qayıtıwçuŋ your one who returns qayıtıwçularıŋ your one who returnses
his / her qayıtıwçusu his / her one who returns qayıtıwçuları his / her one who returnses
our qayıtıwçubuz our one who returns qayıtıwçularıbız our one who returnses
you all's qayıtıwçuğuz you all's one who returns qayıtıwçularığız you all's one who returnses
their qayıtıwçuları their one who returns qayıtıwçuları their one who returnses

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