cerph ecrph creph rceph ercph recph ceprh ecprh cperh pcerh epcrh pecrh crpeh rcpeh cpreh pcreh rpceh prceh erpch repch eprch perch rpech prech cerhp ecrhp crehp rcehp erchp rechp cehrp echrp cherp hcerp ehcrp hecrp crhep rchep chrep hcrep rhcep hrcep erhcp rehcp ehrcp hercp rhecp hrecp cephr ecphr cpehr pcehr epchr pechr cehpr echpr chepr hcepr ehcpr hecpr cpher pcher chper hcper phcer hpcer ephcr pehcr ehpcr hepcr phecr hpecr crphe rcphe cprhe pcrhe rpche prche crhpe rchpe chrpe hcrpe rhcpe hrcpe cphre pchre chpre hcpre phcre hpcre rphce prhce rhpce hrpce phrce hprce erphc rephc eprhc perhc rpehc prehc erhpc rehpc ehrpc herpc rhepc hrepc ephrc pehrc ehprc heprc pherc hperc rphec prhec rhpec hrpec phrec hprec
Note: these 'words' (valid or invalid) are all the permutations of the word cerph. These words are obtained by scrambling the letters in cerph.