açılıwçu

/ atʃɯlɯwtʃu /

Cases

SingularPluralWhen to use it
nominative açılıwçu the one who opens açılıwçula the one who openses the plain dictionary form — the doer of the sentence
genitive açılıwçunu the one who opens' açılıwçulanı the one who openses' the owner — whose it is
accusative açılıwçunu the one who opens (as the object) açılıwçulanı the one who openses (as the object) a specific, known object — whom or what
dative açılıwçuğa to the one who opens açılıwçulağa to the one who openses direction or recipient — to where, to whom
locative açılıwçuda at / in the one who opens açılıwçulada at / in the one who openses where it is; also having — mende bar, "I have it"
ablative açılıwçudan from the one who opens açılıwçuladan from the one who openses 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 açılıwçum my one who opens açılıwçularım my one who openses
your açılıwçuŋ your one who opens açılıwçularıŋ your one who openses
his / her açılıwçusu his / her one who opens açılıwçuları his / her one who openses
our açılıwçubuz our one who opens açılıwçularıbız our one who openses
you all's açılıwçuğuz you all's one who opens açılıwçularığız you all's one who openses
their açılıwçuları their one who opens açılıwçuları their one who openses

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