ayü

/ ajy /

Cases

SingularPluralWhen to use it
nominative ayü the bear ayüle the bears the plain dictionary form — the doer of the sentence
genitive ayünü the bear's ayüleni the bears' the owner — whose it is
accusative ayünü the bear (as the object) ayüleni the bears (as the object) a specific, known object — whom or what
dative ayüge to the bear ayülege to the bears direction or recipient — to where, to whom
locative ayüde at / in the bear ayülede at / in the bears where it is; also having — mende bar, "I have it"
ablative ayüden from the bear ayüleden from the bears 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 ayüm my bear ayülerim my bears
your ayüng your bear ayülering your bears
his / her ayüsü his / her bear ayüleri his / her bears
our ayübüz our bear ayüleribiz our bears
you all's ayügüz you all's bear ayülerigiz you all's bears
their ayüleri their bear ayüleri their bears

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