utter tuter utter tuter ttuer ttuer utetr tuetr uettr euttr teutr etutr utetr tuetr uettr euttr teutr etutr tteur tteur tetur ettur tetur ettur uttre tutre uttre tutre tture tture utrte turte urtte rutte trute rtute utrte turte urtte rutte trute rtute ttrue ttrue trtue rttue trtue rttue utert tuert uetrt eutrt teurt eturt utret turet urtet rutet truet rtuet uertt eurtt urett ruett erutt reutt terut etrut treut rteut ertut retut utert tuert uetrt eutrt teurt eturt utret turet urtet rutet truet rtuet uertt eurtt urett ruett erutt reutt terut etrut treut rteut ertut retut tteru tteru tetru ettru tetru ettru ttreu ttreu trteu rtteu trteu rtteu tertu etrtu tretu rtetu erttu rettu tertu etrtu tretu rtetu erttu rettu
Note: these 'words' (valid or invalid) are all the permutations of the word utter. These words are obtained by scrambling the letters in utter.