berç

/bertʃ/

Cases

SingularPluralWhen to use it
nominativeberçthe callusberçlethe callusesthe plain dictionary form — the doer of the sentence
genitiveberçnithe callus'berçlenithe calluses'the owner — whose it is
accusativeberçnithe callus (as the object)berçlenithe calluses (as the object)a specific, known object — whom or what
dativeberçgeto the callusberçlegeto the callusesdirection or recipient — to where, to whom
locativeberçdeat / in the callusberçledeat / in the calluseswhere it is; also having — mende bar, "I have it"
ablativeberçdenfrom the callusberçledenfrom the calluseswhere 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
myberçimmy callusberçlerimmy calluses
yourberçingyour callusberçleringyour calluses
his / herberçihis / her callusberçlerihis / her calluses
ourberçibizour callusberçleribizour calluses
you all'sberçigizyou all's callusberçlerigizyou all's calluses
theirberçleritheir callusberçleritheir calluses

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