dwarf wdarf dawrf adwrf wadrf awdrf dwraf wdraf drwaf rdwaf wrdaf rwdaf darwf adrwf drawf rdawf ardwf radwf wardf awrdf wradf rwadf arwdf rawdf dwafr wdafr dawfr adwfr wadfr awdfr dwfar wdfar dfwar fdwar wfdar fwdar dafwr adfwr dfawr fdawr afdwr fadwr wafdr awfdr wfadr fwadr afwdr fawdr dwrfa wdrfa drwfa rdwfa wrdfa rwdfa dwfra wdfra dfwra fdwra wfdra fwdra drfwa rdfwa dfrwa fdrwa rfdwa frdwa wrfda rwfda wfrda fwrda rfwda frwda darfw adrfw drafw rdafw ardfw radfw dafrw adfrw dfarw fdarw afdrw fadrw drfaw rdfaw dfraw fdraw rfdaw frdaw arfdw rafdw afrdw fardw rfadw fradw warfd awrfd wrafd rwafd arwfd rawfd wafrd awfrd wfard fward afwrd fawrd wrfad rwfad wfrad fwrad rfwad frwad arfwd rafwd afrwd farwd rfawd frawd
Note: these 'words' (valid or invalid) are all the permutations of the word dwarf. These words are obtained by scrambling the letters in dwarf.