Hi! I have created words.
-Genetive (genetivus): nórecarë -as genetivus is "familiar" and in Quenya it comes to be used for the same in family matters
-Possessive (Possessivus?: Possidere: to possess): harnocarë -as harno "possessor"
-Nominative (nominativus): quettacarë -the "deed" of the name.
-Vocative (vocativus): yellocarë -as "yello" is "call" in Quenya.
-Case (casus-nominum): carë
-Locative (locativus?-locus: spot, place): mencarë -as "men" is a compound of spot only.
-Accusative (accusativus- accusare: to accuse); ulquetiecarë -as case of the accusation.
-Instrumental (instrumentalis?- instrumentum- instrument, tool): tammacarë -as tamma "tool".
-Allative (allativus? -allatus- carried to): colindocarë -as colindo (bearer)
-Ablative (ablativus- taken away): nabecarë -as nab- “to take (hold)"???
-Dative (dativus-dare: to give): annacarë -as anna “gift, (orig.) thing handed, brought or sent to a person"
-Partitive (partitivus- "serving to divide", from "pars"- part): rantatë -ranta (pars) and the same ending as eritë (singular) and linitë (plural).
-Imperative (Imperativus- imperare: to command): canyavë -as canya- "(Q. only) command; lead, rule".
-Respective (respectivus?- relative?): rendacarë -as renda "related, of the same kin or clan" ???
-Indicative (indicativus- indicare- "to point out" "to show" or "to declare"): tentavë? -as tenta- "to point out/to"
-To derive (derivare): onta-?