şahar

/ʃaxar/

Cases

SingularPluralWhen to use it
nominativeşaharthe cityşaharlathe citiesthe plain dictionary form — the doer of the sentence
genitiveşaharnıthe city'sşaharlanıthe cities'the owner — whose it is
accusativeşaharnıthe city (as the object)şaharlanıthe cities (as the object)a specific, known object — whom or what
dativeşaharğato the cityşaharlağato the citiesdirection or recipient — to where, to whom
locativeşahardaat / in the cityşaharladaat / in the citieswhere it is; also having — mende bar, "I have it"
ablativeşahardanfrom the cityşaharladanfrom the citieswhere 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
myşaharımmy cityşaharlarımmy cities
yourşaharıngyour cityşaharlarıngyour cities
his / herşaharıhis / her cityşaharlarıhis / her cities
ourşaharıbızour cityşaharlarıbızour cities
you all'sşaharığızyou all's cityşaharlarığızyou all's cities
theirşaharlarıtheir cityşaharlarıtheir cities

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