sestra

/sestra/

Cases

SingularPluralWhen to use it
nominativesestrathe nursesestralathe nursesthe plain dictionary form — the doer of the sentence
genitivesestranıthe nurse'ssestralanıthe nurses'the owner — whose it is
accusativesestranıthe nurse (as the object)sestralanıthe nurses (as the object)a specific, known object — whom or what
dativesestrağato the nursesestralağato the nursesdirection or recipient — to where, to whom
locativesestradaat / in the nursesestraladaat / in the nurseswhere it is; also having — mende bar, "I have it"
ablativesestradanfrom the nursesestraladanfrom the nurseswhere 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
mysestrammy nursesestralarımmy nurses
yoursestrangyour nursesestralarıngyour nurses
his / hersestrasıhis / her nursesestralarıhis / her nurses
oursestrabızour nursesestralarıbızour nurses
you all'ssestrağızyou all's nursesestralarığızyou all's nurses
theirsestralarıtheir nursesestralarıtheir nurses

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