rived irved rvied vried ivred vired rievd irevd reivd erivd iervd eirvd rveid vreid revid ervid verid evrid iverd vierd ievrd eivrd veird evird rivde irvde rvide vride ivrde virde ridve irdve rdive drive idrve dirve rvdie vrdie rdvie drvie vdrie dvrie ivdre vidre idvre divre vdire dvire riedv iredv reidv eridv ierdv eirdv ridev irdev rdiev driev idrev direv rediv erdiv rdeiv dreiv edriv deriv iedrv eidrv iderv dierv edirv deirv rvedi vredi revdi ervdi verdi evrdi rvdei vrdei rdvei drvei vdrei dvrei redvi erdvi rdevi drevi edrvi dervi vedri evdri vderi dveri edvri devri ivedr viedr ievdr eivdr veidr evidr ivder vider idver diver vdier dvier iedvr eidvr idevr dievr edivr deivr vedir evdir vdeir dveir edvir devir
Note: these 'words' (valid or invalid) are all the permutations of the word rived. These words are obtained by scrambling the letters in rived.