routs oruts ruots urots ourts uorts rotus ortus rtous trous otrus torus rutos urtos rtuos truos utros turos outrs uotrs oturs tours utors tuors roust orust ruost urost ourst uorst rosut orsut rsout srout osrut sorut rusot ursot rsuot sruot usrot surot ousrt uosrt osurt sourt usort suort rotsu ortsu rtosu trosu otrsu torsu rostu orstu rsotu srotu osrtu sortu rtsou trsou rstou srtou tsrou strou otsru tosru ostru sotru tsoru storu rutso urtso rtuso truso utrso turso rusto ursto rsuto sruto usrto surto rtsuo trsuo rstuo srtuo tsruo struo utsro tusro ustro sutro tsuro sturo outsr uotsr otusr tousr utosr tuosr oustr uostr osutr soutr usotr suotr otsur tosur ostur sotur tsour stour utsor tusor ustor sutor tsuor stuor
Note: these 'words' (valid or invalid) are all the permutations of the word routs. These words are obtained by scrambling the letters in routs.