herms ehrms hrems rhems erhms rehms hemrs ehmrs hmers mhers emhrs mehrs hrmes rhmes hmres mhres rmhes mrhes ermhs remhs emrhs merhs rmehs mrehs hersm ehrsm hresm rhesm erhsm rehsm hesrm ehsrm hserm sherm eshrm sehrm hrsem rhsem hsrem shrem rshem srhem ershm reshm esrhm serhm rsehm srehm hemsr ehmsr hmesr mhesr emhsr mehsr hesmr ehsmr hsemr shemr eshmr sehmr hmser mhser hsmer shmer msher smher emshr meshr esmhr semhr msehr smehr hrmse rhmse hmrse mhrse rmhse mrhse hrsme rhsme hsrme shrme rshme srhme hmsre mhsre hsmre shmre mshre smhre rmshe mrshe rsmhe srmhe msrhe smrhe ermsh remsh emrsh mersh rmesh mresh ersmh resmh esrmh sermh rsemh sremh emsrh mesrh esmrh semrh mserh smerh rmseh mrseh rsmeh srmeh msreh smreh
Note: these 'words' (valid or invalid) are all the permutations of the word herms. These words are obtained by scrambling the letters in herms.