qın

/ qɯn /

Cases

SingularPluralWhen to use it
nominative qın the sheath qınla the sheaths the plain dictionary form — the doer of the sentence
genitive qınnı the sheath's qınlanı the sheaths' the owner — whose it is
accusative qınnı the sheath (as the object) qınlanı the sheaths (as the object) a specific, known object — whom or what
dative qınğa to the sheath qınlağa to the sheaths direction or recipient — to where, to whom
locative qında at / in the sheath qınlada at / in the sheaths where it is; also having — mende bar, "I have it"
ablative qından from the sheath qınladan from the sheaths 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 qınım my sheath qınlarım my sheaths
your qınıŋ your sheath qınlarıŋ your sheaths
his / her qını his / her sheath qınları his / her sheaths
our qınıbız our sheath qınlarıbız our sheaths
you all's qınığız you all's sheath qınlarığız you all's sheaths
their qınları their sheath qınları their sheaths

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