outer uoter otuer touer utoer tuoer ouetr uoetr oeutr eoutr ueotr euotr oteur toeur oetur eotur teour etour uteor tueor uetor eutor teuor etuor outre uotre oture toure utore tuore ourte uorte orute route urote ruote otrue torue ortue rotue troue rtoue utroe turoe urtoe rutoe truoe rtuoe ouert uoert oeurt eourt ueort euort ouret uoret oruet rouet uroet ruoet oerut eorut oreut roeut erout reout uerot eurot ureot rueot eruot reuot oteru toeru oetru eotru teoru etoru otreu toreu orteu roteu troeu rtoeu oertu eortu oretu roetu erotu reotu terou etrou treou rteou ertou retou utero tuero uetro eutro teuro eturo utreo tureo urteo ruteo trueo rtueo uerto eurto ureto rueto eruto reuto teruo etruo treuo rteuo ertuo retuo
Note: these 'words' (valid or invalid) are all the permutations of the word outer. These words are obtained by scrambling the letters in outer.