roids orids riods irods oirds iords rodis ordis rdois drois odris doris ridos irdos rdios drios idros diros oidrs iodrs odirs doirs idors diors roisd orisd riosd irosd oirsd iorsd rosid orsid rsoid sroid osrid sorid risod irsod rsiod sriod isrod sirod oisrd iosrd osird soird isord siord rodsi ordsi rdosi drosi odrsi dorsi rosdi orsdi rsodi srodi osrdi sordi rdsoi drsoi rsdoi srdoi dsroi sdroi odsri dosri osdri sodri dsori sdori ridso irdso rdiso driso idrso dirso risdo irsdo rsido srido isrdo sirdo rdsio drsio rsdio srdio dsrio sdrio idsro disro isdro sidro dsiro sdiro oidsr iodsr odisr doisr idosr diosr oisdr iosdr osidr soidr isodr siodr odsir dosir osdir sodir dsoir sdoir idsor disor isdor sidor dsior sdior
Note: these 'words' (valid or invalid) are all the permutations of the word roids. These words are obtained by scrambling the letters in roids.