qaynatıwçu

/ qajnatɯwtʃu /

Cases

SingularPluralWhen to use it
nominative qaynatıwçu the one who boils qaynatıwçula the one who boilses the plain dictionary form — the doer of the sentence
genitive qaynatıwçunu the one who boils' qaynatıwçulanı the one who boilses' the owner — whose it is
accusative qaynatıwçunu the one who boils (as the object) qaynatıwçulanı the one who boilses (as the object) a specific, known object — whom or what
dative qaynatıwçuğa to the one who boils qaynatıwçulağa to the one who boilses direction or recipient — to where, to whom
locative qaynatıwçuda at / in the one who boils qaynatıwçulada at / in the one who boilses where it is; also having — mende bar, "I have it"
ablative qaynatıwçudan from the one who boils qaynatıwçuladan from the one who boilses 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 qaynatıwçum my one who boils qaynatıwçularım my one who boilses
your qaynatıwçuŋ your one who boils qaynatıwçularıŋ your one who boilses
his / her qaynatıwçusu his / her one who boils qaynatıwçuları his / her one who boilses
our qaynatıwçubuz our one who boils qaynatıwçularıbız our one who boilses
you all's qaynatıwçuğuz you all's one who boils qaynatıwçularığız you all's one who boilses
their qaynatıwçuları their one who boils qaynatıwçuları their one who boilses

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