kubik

/kubik/

Cases

SingularPluralWhen to use it
nominativekubikthe cubekubiklethe cubesthe plain dictionary form — the doer of the sentence
genitivekubiknithe cube'skubiklenithe cubes'the owner — whose it is
accusativekubiknithe cube (as the object)kubiklenithe cubes (as the object)a specific, known object — whom or what
dativekubikgeto the cubekubiklegeto the cubesdirection or recipient — to where, to whom
locativekubikdeat / in the cubekubikledeat / in the cubeswhere it is; also having — mende bar, "I have it"
ablativekubikdenfrom the cubekubikledenfrom the cubeswhere 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
mykubigimmy cubekubiklerimmy cubes
yourkubigingyour cubekubikleringyour cubes
his / herkubigihis / her cubekubiklerihis / her cubes
ourkubigibizour cubekubikleribizour cubes
you all'skubigigizyou all's cubekubiklerigizyou all's cubes
theirkubikleritheir cubekubikleritheir cubes

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