rcham crham rhcam hrcam chram hcram rcahm crahm rachm archm carhm acrhm rhacm hracm rahcm arhcm harcm ahrcm charm hcarm cahrm achrm hacrm ahcrm rchma crhma rhcma hrcma chrma hcrma rcmha crmha rmcha mrcha cmrha mcrha rhmca hrmca rmhca mrhca hmrca mhrca chmra hcmra cmhra mchra hmcra mhcra rcamh cramh racmh arcmh carmh acrmh rcmah crmah rmcah mrcah cmrah mcrah ramch armch rmach mrach amrch march camrh acmrh cmarh mcarh amcrh macrh rhamc hramc rahmc arhmc harmc ahrmc rhmac hrmac rmhac mrhac hmrac mhrac ramhc armhc rmahc mrahc amrhc marhc hamrc ahmrc hmarc mharc amhrc mahrc chamr hcamr cahmr achmr hacmr ahcmr chmar hcmar cmhar mchar hmcar mhcar camhr acmhr cmahr mcahr amchr machr hamcr ahmcr hmacr mhacr amhcr mahcr
Note: these 'words' (valid or invalid) are all the permutations of the word rcham. These words are obtained by scrambling the letters in rcham.