roils orils riols irols oirls iorls rolis orlis rlois lrois olris loris rilos irlos rlios lrios ilros liros oilrs iolrs olirs loirs ilors liors roisl orisl riosl irosl oirsl iorsl rosil orsil rsoil sroil osril soril risol irsol rsiol sriol isrol sirol oisrl iosrl osirl soirl isorl siorl rolsi orlsi rlosi lrosi olrsi lorsi rosli orsli rsoli sroli osrli sorli rlsoi lrsoi rsloi srloi lsroi slroi olsri losri oslri solri lsori slori rilso irlso rliso lriso ilrso lirso rislo irslo rsilo srilo isrlo sirlo rlsio lrsio rslio srlio lsrio slrio ilsro lisro islro silro lsiro sliro oilsr iolsr olisr loisr ilosr liosr oislr ioslr osilr soilr isolr siolr olsir losir oslir solir lsoir sloir ilsor lisor islor silor lsior slior
Note: these 'words' (valid or invalid) are all the permutations of the word roils. These words are obtained by scrambling the letters in roils.