en

/en/

Cases

SingularPluralWhen to use it
nominativeenthe widthenlethe widthsthe plain dictionary form — the doer of the sentence
genitiveennithe width'senlenithe widths'the owner — whose it is
accusativeennithe width (as the object)enlenithe widths (as the object)a specific, known object — whom or what
dativeengeto the widthenlegeto the widthsdirection or recipient — to where, to whom
locativeendeat / in the widthenledeat / in the widthswhere it is; also having — mende bar, "I have it"
ablativeendenfrom the widthenledenfrom the widthswhere 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
myenimmy widthenlerimmy widths
youreningyour widthenleringyour widths
his / herenihis / her widthenlerihis / her widths
ourenibizour widthenleribizour widths
you all'senigizyou all's widthenlerigizyou all's widths
theirenleritheir widthenleritheir widths

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