rhent hrent rehnt erhnt hernt ehrnt rhnet hrnet rnhet nrhet hnret nhret renht ernht rneht nreht enrht nerht henrt ehnrt hnert nhert enhrt nehrt rhetn hretn rehtn erhtn hertn ehrtn rhten hrten rthen trhen htren thren rethn erthn rtehn trehn etrhn terhn hetrn ehtrn htern thern ethrn tehrn rhnte hrnte rnhte nrhte hnrte nhrte rhtne hrtne rthne trhne htrne thrne rnthe nrthe rtnhe trnhe ntrhe tnrhe hntre nhtre htnre thnre nthre tnhre renth ernth rneth nreth enrth nerth retnh ertnh rtenh trenh etrnh ternh rnteh nrteh rtneh trneh ntreh tnreh entrh netrh etnrh tenrh nterh tnerh hentr ehntr hnetr nhetr enhtr nehtr hetnr ehtnr htenr thenr ethnr tehnr hnter nhter htner thner nther tnher enthr nethr etnhr tenhr ntehr tnehr
Note: these 'words' (valid or invalid) are all the permutations of the word rhent. These words are obtained by scrambling the letters in rhent.