açıtıw

/ atʃɯtɯw /

Cases

SingularPluralWhen to use it
nominative açıtıw the causing pain açıtıwla the causing pains the plain dictionary form — the doer of the sentence
genitive açıtıwnu the causing pain's açıtıwlanı the causing pains' the owner — whose it is
accusative açıtıwnu the causing pain (as the object) açıtıwlanı the causing pains (as the object) a specific, known object — whom or what
dative açıtıwğa to the causing pain açıtıwlağa to the causing pains direction or recipient — to where, to whom
locative açıtıwda at / in the causing pain açıtıwlada at / in the causing pains where it is; also having — mende bar, "I have it"
ablative açıtıwdan from the causing pain açıtıwladan from the causing pains 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 açıtıwum my causing pain açıtıwlarım my causing pains
your açıtıwuŋ your causing pain açıtıwlarıŋ your causing pains
his / her açıtıwu his / her causing pain açıtıwları his / her causing pains
our açıtıwubuz our causing pain açıtıwlarıbız our causing pains
you all's açıtıwuğuz you all's causing pain açıtıwlarığız you all's causing pains
their açıtıwları their causing pain açıtıwları their causing pains

The overlap in the last rows is real, not a mistake: açıtıwları can mean "his / her causing pains", "their causing pain", or "their causing pains" — context decides.