nidor indor ndior dnior idnor dinor niodr inodr noidr onidr iondr oindr ndoir dnoir nodir ondir donir odnir idonr dionr iodnr oidnr doinr odinr nidro indro ndiro dniro idnro dinro nirdo inrdo nrido rnido irndo rindo ndrio dnrio nrdio rndio drnio rdnio idrno dirno irdno ridno drino rdino niord inord noird onird ionrd oinrd nirod inrod nriod rniod irnod rinod norid onrid nroid rnoid ornid ronid iornd oirnd irond riond orind roind ndori dnori nodri ondri donri odnri ndroi dnroi nrdoi rndoi drnoi rdnoi nordi onrdi nrodi rnodi orndi rondi dorni odrni droni rdoni ordni rodni idorn diorn iodrn oidrn doirn odirn idron diron irdon ridon drion rdion iordn oirdn irodn riodn oridn roidn dorin odrin droin rdoin ordin rodin
Note: these 'words' (valid or invalid) are all the permutations of the word nidor. These words are obtained by scrambling the letters in nidor.