şaytan

/ ʃajtan /

Cases

SingularPluralWhen to use it
nominative şaytan the devil şaytanla the devils the plain dictionary form — the doer of the sentence
genitive şaytannı the devil's şaytanlanı the devils' the owner — whose it is
accusative şaytannı the devil (as the object) şaytanlanı the devils (as the object) a specific, known object — whom or what
dative şaytanğa to the devil şaytanlağa to the devils direction or recipient — to where, to whom
locative şaytanda at / in the devil şaytanlada at / in the devils where it is; also having — mende bar, "I have it"
ablative şaytandan from the devil şaytanladan from the devils 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 şaytanım my devil şaytanlarım my devils
your şaytanıŋ your devil şaytanlarıŋ your devils
his / her şaytanı his / her devil şaytanları his / her devils
our şaytanıbız our devil şaytanlarıbız our devils
you all's şaytanığız you all's devil şaytanlarığız you all's devils
their şaytanları their devil şaytanları their devils

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