ferry efrry frery rfery erfry refry ferry efrry frery rfery erfry refry frrey rfrey frrey rfrey rrfey rrfey errfy rerfy errfy rerfy rrefy rrefy feryr efryr freyr rfeyr erfyr refyr feyrr efyrr fyerr yferr eyfrr yefrr fryer rfyer fyrer yfrer ryfer yrfer eryfr reyfr eyrfr yerfr ryefr yrefr feryr efryr freyr rfeyr erfyr refyr feyrr efyrr fyerr yferr eyfrr yefrr fryer rfyer fyrer yfrer ryfer yrfer eryfr reyfr eyrfr yerfr ryefr yrefr frrye rfrye frrye rfrye rrfye rrfye fryre rfyre fyrre yfrre ryfre yrfre fryre rfyre fyrre yfrre ryfre yrfre rryfe rryfe ryrfe yrrfe ryrfe yrrfe erryf reryf erryf reryf rreyf rreyf eryrf reyrf eyrrf yerrf ryerf yrerf eryrf reyrf eyrrf yerrf ryerf yrerf rryef rryef ryref yrref ryref yrref
Note: these 'words' (valid or invalid) are all the permutations of the word ferry. These words are obtained by scrambling the letters in ferry.