çat

/ tʃat /

Cases

SingularPluralWhen to use it
nominative çat the hollow çatla the hollows the plain dictionary form — the doer of the sentence
genitive çatnı the hollow's çatlanı the hollows' the owner — whose it is
accusative çatnı the hollow (as the object) çatlanı the hollows (as the object) a specific, known object — whom or what
dative çatha to the hollow çatlağa to the hollows direction or recipient — to where, to whom
locative çatda at / in the hollow çatlada at / in the hollows where it is; also having — mende bar, "I have it"
ablative çatdan from the hollow çatladan from the hollows 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 çatım my hollow çatlarım my hollows
your çatıŋ your hollow çatlarıŋ your hollows
his / her çatı his / her hollow çatları his / her hollows
our çatıbız our hollow çatlarıbız our hollows
you all's çatığız you all's hollow çatlarığız you all's hollows
their çatları their hollow çatları their hollows

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