raffs arffs rfafs frafs afrfs farfs raffs arffs rfafs frafs afrfs farfs rffas frfas rffas frfas ffras ffras affrs fafrs affrs fafrs ffars ffars rafsf arfsf rfasf frasf afrsf farsf rasff arsff rsaff sraff asrff sarff rfsaf frsaf rsfaf srfaf fsraf sfraf afsrf fasrf asfrf safrf fsarf sfarf rafsf arfsf rfasf frasf afrsf farsf rasff arsff rsaff sraff asrff sarff rfsaf frsaf rsfaf srfaf fsraf sfraf afsrf fasrf asfrf safrf fsarf sfarf rffsa frfsa rffsa frfsa ffrsa ffrsa rfsfa frsfa rsffa srffa fsrfa sfrfa rfsfa frsfa rsffa srffa fsrfa sfrfa ffsra ffsra fsfra sffra fsfra sffra affsr fafsr affsr fafsr ffasr ffasr afsfr fasfr asffr saffr fsafr sfafr afsfr fasfr asffr saffr fsafr sfafr ffsar ffsar fsfar sffar fsfar sffar
Note: these 'words' (valid or invalid) are all the permutations of the word raffs. These words are obtained by scrambling the letters in raffs.