cased acsed csaed scaed asced saced caesd acesd ceasd ecasd aecsd eacsd csead scead cesad ecsad secad escad asecd saecd aescd eascd seacd esacd casde acsde csade scade ascde sacde cadse acdse cdase dcase adcse dacse csdae scdae cdsae dcsae sdcae dscae asdce sadce adsce dasce sdace dsace caeds aceds ceads ecads aecds eacds cades acdes cdaes dcaes adces daces cedas ecdas cdeas dceas edcas decas aedcs eadcs adecs daecs edacs deacs cseda sceda cesda ecsda secda escda csdea scdea cdsea dcsea sdcea dscea cedsa ecdsa cdesa dcesa edcsa decsa sedca esdca sdeca dseca edsca desca asedc saedc aesdc easdc seadc esadc asdec sadec adsec dasec sdaec dsaec aedsc eadsc adesc daesc edasc deasc sedac esdac sdeac dseac edsac desac
Note: these 'words' (valid or invalid) are all the permutations of the word cased. These words are obtained by scrambling the letters in cased.