tezis

/tezis/

Cases

SingularPluralWhen to use it
nominativetezisthe thesistezislethe thesisesthe plain dictionary form — the doer of the sentence
genitivetezisnithe thesis'tezislenithe thesises'the owner — whose it is
accusativetezisnithe thesis (as the object)tezislenithe thesises (as the object)a specific, known object — whom or what
dativetezisgeto the thesistezislegeto the thesisesdirection or recipient — to where, to whom
locativetezisdeat / in the thesistezisledeat / in the thesiseswhere it is; also having — mende bar, "I have it"
ablativetezisdenfrom the thesistezisledenfrom the thesiseswhere 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
mytezisimmy thesistezislerimmy thesises
yourtezisingyour thesistezisleringyour thesises
his / hertezisihis / her thesistezislerihis / her thesises
ourtezisibizour thesistezisleribizour thesises
you all'stezisigizyou all's thesistezislerigizyou all's thesises
theirtezisleritheir thesistezisleritheir thesises

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