phcen hpcen pchen cphen hcpen chpen phecn hpecn pehcn ephcn hepcn ehpcn pcehn cpehn pechn epchn cephn ecphn hcepn chepn hecpn ehcpn cehpn echpn phcne hpcne pchne cphne hcpne chpne phnce hpnce pnhce nphce hnpce nhpce pcnhe cpnhe pnche npche cnphe ncphe hcnpe chnpe hncpe nhcpe cnhpe nchpe phenc hpenc pehnc ephnc hepnc ehpnc phnec hpnec pnhec nphec hnpec nhpec penhc epnhc pnehc npehc enphc nephc henpc ehnpc hnepc nhepc enhpc nehpc pcenh cpenh pecnh epcnh cepnh ecpnh pcneh cpneh pnceh npceh cnpeh ncpeh pench epnch pnech npech enpch nepch cenph ecnph cneph nceph encph necph hcenp chenp hecnp ehcnp cehnp echnp hcnep chnep hncep nhcep cnhep nchep hencp ehncp hnecp nhecp enhcp nehcp cenhp ecnhp cnehp ncehp enchp nechp
Note: these 'words' (valid or invalid) are all the permutations of the word phcen. These words are obtained by scrambling the letters in phcen.