derms edrms drems rdems erdms redms demrs edmrs dmers mders emdrs medrs drmes rdmes dmres mdres rmdes mrdes ermds remds emrds merds rmeds mreds dersm edrsm dresm rdesm erdsm redsm desrm edsrm dserm sderm esdrm sedrm drsem rdsem dsrem sdrem rsdem srdem ersdm resdm esrdm serdm rsedm sredm demsr edmsr dmesr mdesr emdsr medsr desmr edsmr dsemr sdemr esdmr sedmr dmser mdser dsmer sdmer msder smder emsdr mesdr esmdr semdr msedr smedr drmse rdmse dmrse mdrse rmdse mrdse drsme rdsme dsrme sdrme rsdme srdme dmsre mdsre dsmre sdmre msdre smdre rmsde mrsde rsmde srmde msrde smrde ermsd remsd emrsd mersd rmesd mresd ersmd resmd esrmd sermd rsemd sremd emsrd mesrd esmrd semrd mserd smerd rmsed mrsed rsmed srmed msred smred
Note: these 'words' (valid or invalid) are all the permutations of the word derms. These words are obtained by scrambling the letters in derms.