sirke

/sirke/

Cases

SingularPluralWhen to use it
nominativesirkethe nitsirkelethe nitsthe plain dictionary form — the doer of the sentence
genitivesirkenithe nit'ssirkelenithe nits'the owner — whose it is
accusativesirkenithe nit (as the object)sirkelenithe nits (as the object)a specific, known object — whom or what
dativesirkegeto the nitsirkelegeto the nitsdirection or recipient — to where, to whom
locativesirkedeat / in the nitsirkeledeat / in the nitswhere it is; also having — mende bar, "I have it"
ablativesirkedenfrom the nitsirkeledenfrom the nitswhere 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
mysirkemmy nitsirkelerimmy nits
yoursirkengyour nitsirkeleringyour nits
his / hersirkesihis / her nitsirkelerihis / her nits
oursirkebizour nitsirkeleribizour nits
you all'ssirkegizyou all's nitsirkelerigizyou all's nits
theirsirkeleritheir nitsirkeleritheir nits

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