haljar

/xaldʒar/

Cases

SingularPluralWhen to use it
nominativehaljarthe penhaljarlathe pensthe plain dictionary form — the doer of the sentence
genitivehaljarnıthe pen'shaljarlanıthe pens'the owner — whose it is
accusativehaljarnıthe pen (as the object)haljarlanıthe pens (as the object)a specific, known object — whom or what
dativehaljarğato the penhaljarlağato the pensdirection or recipient — to where, to whom
locativehaljardaat / in the penhaljarladaat / in the penswhere it is; also having — mende bar, "I have it"
ablativehaljardanfrom the penhaljarladanfrom the penswhere 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
myhaljarımmy penhaljarlarımmy pens
yourhaljarıngyour penhaljarlarıngyour pens
his / herhaljarıhis / her penhaljarlarıhis / her pens
ourhaljarıbızour penhaljarlarıbızour pens
you all'shaljarığızyou all's penhaljarlarığızyou all's pens
theirhaljarlarıtheir penhaljarlarıtheir pens

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