jel

/dʒel/

Cases

SingularPluralWhen to use it
nominativejelthe windjellethe windsthe plain dictionary form — the doer of the sentence
genitivejelnithe wind'sjellenithe winds'the owner — whose it is
accusativejelnithe wind (as the object)jellenithe winds (as the object)a specific, known object — whom or what
dativejelgeto the windjellegeto the windsdirection or recipient — to where, to whom
locativejeldeat / in the windjelledeat / in the windswhere it is; also having — mende bar, "I have it"
ablativejeldenfrom the windjelledenfrom the windswhere 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
myjelimmy windjellerimmy winds
yourjelingyour windjelleringyour winds
his / herjelihis / her windjellerihis / her winds
ourjelibizour windjelleribizour winds
you all'sjeligizyou all's windjellerigizyou all's winds
theirjelleritheir windjelleritheir winds

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