codec ocdec cdoec dcoec odcec docec coedc ocedc ceodc ecodc oecdc eocdc cdeoc dceoc cedoc ecdoc decoc edcoc odecc doecc oedcc eodcc deocc edocc codce ocdce cdoce dcoce odcce docce cocde occde ccode ccode occde cocde cdcoe dccoe ccdoe ccdoe dccoe cdcoe odcce docce ocdce codce dcoce cdoce coecd ocecd ceocd ecocd oeccd eoccd coced occed ccoed ccoed occed coced cecod eccod cceod cceod eccod cecod oeccd eoccd ocecd coecd ecocd ceocd cdeco dceco cedco ecdco decco edcco cdceo dcceo ccdeo ccdeo dcceo cdceo cecdo eccdo ccedo ccedo eccdo cecdo decco edcco dceco cdeco ecdco cedco odecc doecc oedcc eodcc deocc edocc odcec docec ocdec codec dcoec cdoec oecdc eocdc ocedc coedc ecodc ceodc decoc edcoc dceoc cdeoc ecdoc cedoc
Note: these 'words' (valid or invalid) are all the permutations of the word codec. These words are obtained by scrambling the letters in codec.