kergiç

/ kerɡitʃ /

Cases

SingularPluralWhen to use it
nominative kergiç the thing for stretching kergiçle the thing for stretchings the plain dictionary form — the doer of the sentence
genitive kergiçni the thing for stretching's kergiçleni the thing for stretchings' the owner — whose it is
accusative kergiçni the thing for stretching (as the object) kergiçleni the thing for stretchings (as the object) a specific, known object — whom or what
dative kergiçge to the thing for stretching kergiçlege to the thing for stretchings direction or recipient — to where, to whom
locative kergiçde at / in the thing for stretching kergiçlede at / in the thing for stretchings where it is; also having — mende bar, "I have it"
ablative kergiçden from the thing for stretching kergiçleden from the thing for stretchings 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 kergiçim my thing for stretching kergiçlerim my thing for stretchings
your kergiçiŋ your thing for stretching kergiçleriŋ your thing for stretchings
his / her kergiçi his / her thing for stretching kergiçleri his / her thing for stretchings
our kergiçibiz our thing for stretching kergiçleribiz our thing for stretchings
you all's kergiçigiz you all's thing for stretching kergiçlerigiz you all's thing for stretchings
their kergiçleri their thing for stretching kergiçleri their thing for stretchings

The overlap in the last rows is real, not a mistake: kergiçleri can mean "his / her thing for stretchings", "their thing for stretching", or "their thing for stretchings" — context decides.