ıyık kün

/ ɯjɯq kyn /

Cases

SingularPluralWhen to use it
nominative ıyık kün the Sunday ıyık künle the Sundays the plain dictionary form — the doer of the sentence
genitive ıyık künnü the Sunday's ıyık künleni the Sundays' the owner — whose it is
accusative ıyık künnü the Sunday (as the object) ıyık künleni the Sundays (as the object) a specific, known object — whom or what
dative ıyık künge to the Sunday ıyık künlege to the Sundays direction or recipient — to where, to whom
locative ıyık künde at / in the Sunday ıyık künlede at / in the Sundays where it is; also having — mende bar, "I have it"
ablative ıyık künden from the Sunday ıyık künleden from the Sundays 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 ıyık künüm my Sunday ıyık künlerim my Sundays
your ıyık kününg your Sunday ıyık künlering your Sundays
his / her ıyık künü his / her Sunday ıyık künleri his / her Sundays
our ıyık künübüz our Sunday ıyık künleribiz our Sundays
you all's ıyık künügüz you all's Sunday ıyık künlerigiz you all's Sundays
their ıyık künleri their Sunday ıyık künleri their Sundays

The overlap in the last rows is real, not a mistake: ıyık künleri can mean "his / her Sundays", "their Sunday", or "their Sundays" — context decides.