fetid eftid fteid tfeid etfid tefid feitd efitd fietd ifetd eiftd ieftd ftied tfied fited ifted tifed itfed etifd teifd eitfd ietfd tiefd itefd fetdi eftdi ftedi tfedi etfdi tefdi fedti efdti fdeti dfeti edfti defti ftdei tfdei fdtei dftei tdfei dtfei etdfi tedfi edtfi detfi tdefi dtefi feidt efidt fiedt ifedt eifdt iefdt fedit efdit fdeit dfeit edfit defit fidet ifdet fdiet dfiet idfet difet eidft iedft edift deift ideft dieft ftide tfide fitde iftde tifde itfde ftdie tfdie fdtie dftie tdfie dtfie fidte ifdte fdite dfite idfte difte tidfe itdfe tdife dtife idtfe ditfe etidf teidf eitdf ietdf tiedf itedf etdif tedif edtif detif tdeif dteif eidtf iedtf editf deitf idetf dietf tidef itdef tdief dtief idtef ditef
Note: these 'words' (valid or invalid) are all the permutations of the word fetid. These words are obtained by scrambling the letters in fetid.