başçık

/ baʃtʃɯq /

Cases

SingularPluralWhen to use it
nominative başçık the head başçıkla the heads the plain dictionary form — the doer of the sentence
genitive başçıknı the head's başçıklanı the heads' the owner — whose it is
accusative başçıknı the head (as the object) başçıklanı the heads (as the object) a specific, known object — whom or what
dative başçıkğa to the head başçıklağa to the heads direction or recipient — to where, to whom
locative başçıkda at / in the head başçıklada at / in the heads where it is; also having — mende bar, "I have it"
ablative başçıkdan from the head başçıkladan from the heads 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 başçığım my head başçıklarım my heads
your başçığıng your head başçıklarıng your heads
his / her başçığı his / her head başçıkları his / her heads
our başçığıbız our head başçıklarıbız our heads
you all's başçığığız you all's head başçıklarığız you all's heads
their başçıkları their head başçıkları their heads

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