posılka

/posɯlka/

Cases

SingularPluralWhen to use it
nominativeposılkathe parcelposılkalathe parcelsthe plain dictionary form — the doer of the sentence
genitiveposılkanıthe parcel'sposılkalanıthe parcels'the owner — whose it is
accusativeposılkanıthe parcel (as the object)posılkalanıthe parcels (as the object)a specific, known object — whom or what
dativeposılkağato the parcelposılkalağato the parcelsdirection or recipient — to where, to whom
locativeposılkadaat / in the parcelposılkaladaat / in the parcelswhere it is; also having — mende bar, "I have it"
ablativeposılkadanfrom the parcelposılkaladanfrom the parcelswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
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
myposılkammy parcelposılkalarımmy parcels
yourposılkangyour parcelposılkalarıngyour parcels
his / herposılkasıhis / her parcelposılkalarıhis / her parcels
ourposılkabızour parcelposılkalarıbızour parcels
you all'sposılkağızyou all's parcelposılkalarığızyou all's parcels
theirposılkalarıtheir parcelposılkalarıtheir parcels

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