riots irots roits orits iorts oirts ritos irtos rtios trios itros tiros rotis ortis rtois trois otris toris iotrs oitrs itors tiors otirs toirs riost irost roist orist iorst oirst risot irsot rsiot sriot isrot sirot rosit orsit rsoit sroit osrit sorit iosrt oisrt isort siort osirt soirt ritso irtso rtiso triso itrso tirso risto irsto rsito srito isrto sirto rtsio trsio rstio srtio tsrio strio itsro tisro istro sitro tsiro stiro rotsi ortsi rtosi trosi otrsi torsi rosti orsti rsoti sroti osrti sorti rtsoi trsoi rstoi srtoi tsroi stroi otsri tosri ostri sotri tsori stori iotsr oitsr itosr tiosr otisr toisr iostr oistr isotr siotr ositr soitr itsor tisor istor sitor tsior stior otsir tosir ostir sotir tsoir stoir
Note: these 'words' (valid or invalid) are all the permutations of the word riots. These words are obtained by scrambling the letters in riots.