bashıç

/ basxɯtʃ /

Cases

SingularPluralWhen to use it
nominative bashıç the stairs bashıçla the stairs the plain dictionary form — the doer of the sentence
genitive bashıçnı the stairs' bashıçlanı the stairs' the owner — whose it is
accusative bashıçnı the stairs (as the object) bashıçlanı the stairs (as the object) a specific, known object — whom or what
dative bashıçha to the stairs bashıçlağa to the stairs direction or recipient — to where, to whom
locative bashıçda at / in the stairs bashıçlada at / in the stairs where it is; also having — mende bar, "I have it"
ablative bashıçdan from the stairs bashıçladan from the stairs 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 bashıçım my stairs bashıçlarım my stairs
your bashıçıng your stairs bashıçlarıng your stairs
his / her bashıçı his / her stairs bashıçları his / her stairs
our bashıçıbız our stairs bashıçlarıbız our stairs
you all's bashıçığız you all's stairs bashıçlarığız you all's stairs
their bashıçları their stairs bashıçları their stairs

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