duffel udffel dfufel fdufel ufdfel fudfel duffel udffel dfufel fdufel ufdfel fudfel dffuel fdfuel dffuel fdfuel ffduel ffduel uffdel fufdel uffdel fufdel ffudel ffudel dufefl udfefl dfuefl fduefl ufdefl fudefl dueffl udeffl deuffl eduffl uedffl eudffl dfeufl fdeufl defufl edfufl fedufl efdufl ufedfl fuedfl uefdfl eufdfl feudfl efudfl dufefl udfefl dfuefl fduefl ufdefl fudefl dueffl udeffl deuffl eduffl uedffl eudffl dfeufl fdeufl defufl edfufl fedufl efdufl ufedfl fuedfl uefdfl eufdfl feudfl efudfl dffeul fdfeul dffeul fdfeul ffdeul ffdeul dfeful fdeful defful edfful fedful efdful dfeful fdeful defful edfful fedful efdful ffedul ffedul fefdul effdul fefdul effdul uffedl fufedl uffedl fufedl ffuedl ffuedl ufefdl fuefdl ueffdl euffdl feufdl efufdl ufefdl fuefdl ueffdl euffdl feufdl efufdl ffeudl ffeudl fefudl effudl fefudl effudl duffle udffle dfufle fdufle ufdfle fudfle duffle udffle dfufle fdufle ufdfle fudfle dffule fdfule dffule fdfule ffdule ffdule uffdle fufdle uffdle fufdle ffudle ffudle duflfe udflfe dfulfe fdulfe ufdlfe fudlfe dulffe udlffe dluffe lduffe uldffe ludffe dflufe fdlufe dlfufe ldfufe fldufe lfdufe ufldfe fuldfe ulfdfe lufdfe fludfe lfudfe duflfe udflfe dfulfe fdulfe ufdlfe fudlfe dulffe udlffe dluffe lduffe uldffe ludffe dflufe fdlufe dlfufe ldfufe fldufe lfdufe ufldfe fuldfe ulfdfe lufdfe fludfe lfudfe dfflue fdflue dfflue fdflue ffdlue ffdlue dflfue fdlfue dlffue ldffue fldfue lfdfue dflfue fdlfue dlffue ldffue fldfue lfdfue ffldue ffldue flfdue lffdue flfdue lffdue ufflde fuflde ufflde fuflde ffulde ffulde uflfde fulfde ulffde luffde flufde lfufde uflfde fulfde ulffde luffde flufde lfufde fflude fflude flfude lffude flfude lffude dufelf udfelf dfuelf fduelf ufdelf fudelf dueflf udeflf deuflf eduflf uedflf eudflf dfeulf fdeulf defulf edfulf fedulf efdulf ufedlf fuedlf uefdlf eufdlf feudlf efudlf duflef udflef dfulef fdulef ufdlef fudlef dulfef udlfef dlufef ldufef uldfef ludfef dfluef fdluef dlfuef ldfuef flduef lfduef ufldef fuldef ulfdef lufdef fludef lfudef duelff udelff deulff edulff uedlff eudlff duleff udleff dlueff ldueff uldeff ludeff deluff edluff dleuff ldeuff elduff leduff ueldff euldff uledff luedff eludff leudff dfeluf fdeluf defluf edfluf fedluf efdluf dfleuf fdleuf dlfeuf ldfeuf fldeuf lfdeuf delfuf edlfuf dlefuf ldefuf eldfuf ledfuf felduf eflduf fleduf lfeduf elfduf lefduf ufeldf fueldf uefldf eufldf feuldf efuldf ufledf fuledf ulfedf lufedf fluedf lfuedf uelfdf eulfdf ulefdf luefdf elufdf leufdf feludf efludf fleudf lfeudf elfudf lefudf dufelf udfelf dfuelf fduelf ufdelf fudelf dueflf udeflf deuflf eduflf uedflf eudflf dfeulf fdeulf defulf edfulf fedulf efdulf ufedlf fuedlf uefdlf eufdlf feudlf efudlf duflef udflef dfulef fdulef ufdlef fudlef dulfef udlfef dlufef ldufef uldfef ludfef dfluef fdluef dlfuef ldfuef flduef lfduef ufldef fuldef ulfdef lufdef fludef lfudef duelff udelff deulff edulff uedlff eudlff duleff udleff dlueff ldueff uldeff ludeff deluff edluff dleuff ldeuff elduff leduff ueldff euldff uledff luedff eludff leudff dfeluf fdeluf defluf edfluf fedluf efdluf dfleuf fdleuf dlfeuf ldfeuf fldeuf lfdeuf delfuf edlfuf dlefuf ldefuf eldfuf ledfuf felduf eflduf fleduf lfeduf elfduf lefduf ufeldf fueldf uefldf eufldf feuldf efuldf ufledf fuledf ulfedf lufedf fluedf lfuedf uelfdf eulfdf ulefdf luefdf elufdf leufdf feludf efludf fleudf lfeudf elfudf lefudf dffelu fdfelu dffelu fdfelu ffdelu ffdelu dfeflu fdeflu defflu edfflu fedflu efdflu dfeflu fdeflu defflu edfflu fedflu efdflu ffedlu ffedlu fefdlu effdlu fefdlu effdlu dffleu fdfleu dffleu fdfleu ffdleu ffdleu dflfeu fdlfeu dlffeu ldffeu fldfeu lfdfeu dflfeu fdlfeu dlffeu ldffeu fldfeu lfdfeu ffldeu ffldeu flfdeu lffdeu flfdeu lffdeu dfelfu fdelfu deflfu edflfu fedlfu efdlfu dflefu fdlefu dlfefu ldfefu fldefu lfdefu delffu edlffu dleffu ldeffu eldffu ledffu feldfu efldfu fledfu lfedfu elfdfu lefdfu dfelfu fdelfu deflfu edflfu fedlfu efdlfu dflefu fdlefu dlfefu ldfefu fldefu lfdefu delffu edlffu dleffu ldeffu eldffu ledffu feldfu efldfu fledfu lfedfu elfdfu lefdfu ffeldu ffeldu fefldu effldu fefldu effldu ffledu ffledu flfedu lffedu flfedu lffedu felfdu eflfdu flefdu lfefdu elffdu leffdu felfdu eflfdu flefdu lfefdu elffdu leffdu uffeld fufeld uffeld fufeld ffueld ffueld ufefld fuefld ueffld euffld feufld efufld ufefld fuefld ueffld euffld feufld efufld ffeuld ffeuld fefuld effuld fefuld effuld uffled fufled uffled fufled ffuled ffuled uflfed fulfed ulffed luffed flufed lfufed uflfed fulfed ulffed luffed flufed lfufed fflued fflued flfued lffued flfued lffued ufelfd fuelfd ueflfd euflfd feulfd efulfd uflefd fulefd ulfefd lufefd fluefd lfuefd uelffd eulffd uleffd lueffd eluffd leuffd felufd eflufd fleufd lfeufd elfufd lefufd ufelfd fuelfd ueflfd euflfd feulfd efulfd uflefd fulefd ulfefd lufefd fluefd lfuefd uelffd eulffd uleffd lueffd eluffd leuffd felufd eflufd fleufd lfeufd elfufd lefufd ffelud ffelud feflud efflud feflud efflud ffleud ffleud flfeud lffeud flfeud lffeud felfud eflfud flefud lfefud elffud leffud felfud eflfud flefud lfefud elffud leffud
Note: these 'words' (valid or invalid) are all the permutations of the word duffel. These words are obtained by scrambling the letters in duffel.