reirds erirds rierds irerds eirrds ierrds rerids errids rreids rreids errids rerids rireds irreds rrieds rrieds irreds rireds eirrds ierrds erirds reirds irerds rierds reidrs eridrs riedrs iredrs eirdrs ierdrs redirs erdirs rdeirs dreirs edrirs derirs riders irders rdiers driers idrers dirers eidrrs iedrrs edirrs deirrs iderrs dierrs rerdis errdis rredis rredis errdis rerdis redris erdris rderis dreris edrris derris rrdeis rrdeis rdreis drreis rdreis drreis erdris redris edrris derris rderis dreris rirdes irrdes rrides rrides irrdes rirdes ridres irdres rdires drires idrres dirres rrdies rrdies rdries drries rdries drries irdres ridres idrres dirres rdires drires eirdrs ierdrs eridrs reidrs iredrs riedrs eidrrs iedrrs edirrs deirrs iderrs dierrs erdirs redirs edrirs derirs rdeirs dreirs irders riders idrers dirers rdiers driers reirsd erirsd riersd irersd eirrsd ierrsd rerisd errisd rreisd rreisd errisd rerisd riresd irresd rriesd rriesd irresd riresd eirrsd ierrsd erirsd reirsd irersd riersd reisrd erisrd riesrd iresrd eirsrd iersrd resird ersird rseird sreird esrird serird riserd irserd rsierd srierd isrerd sirerd eisrrd iesrrd esirrd seirrd iserrd sierrd rersid errsid rresid rresid errsid rersid resrid ersrid rserid srerid esrrid serrid rrseid rrseid rsreid srreid rsreid srreid ersrid resrid esrrid serrid rserid srerid rirsed irrsed rrised rrised irrsed rirsed risred irsred rsired srired isrred sirred rrsied rrsied rsried srried rsried srried irsred risred isrred sirred rsired srired eirsrd iersrd erisrd reisrd iresrd riesrd eisrrd iesrrd esirrd seirrd iserrd sierrd ersird resird esrird serird rseird sreird irserd riserd isrerd sirerd rsierd srierd reidsr eridsr riedsr iredsr eirdsr ierdsr redisr erdisr rdeisr dreisr edrisr derisr ridesr irdesr rdiesr driesr idresr diresr eidrsr iedrsr edirsr deirsr idersr diersr reisdr erisdr riesdr iresdr eirsdr iersdr residr ersidr rseidr sreidr esridr seridr risedr irsedr rsiedr sriedr isredr siredr eisrdr iesrdr esirdr seirdr iserdr sierdr redsir erdsir rdesir dresir edrsir dersir resdir ersdir rsedir sredir esrdir serdir rdseir drseir rsdeir srdeir dsreir sdreir edsrir desrir esdrir sedrir dserir sderir ridser irdser rdiser driser idrser dirser risder irsder rsider srider isrder sirder rdsier drsier rsdier srdier dsrier sdrier idsrer disrer isdrer sidrer dsirer sdirer eidsrr iedsrr edisrr deisrr idesrr diesrr eisdrr iesdrr esidrr seidrr isedrr siedrr edsirr desirr esdirr sedirr dseirr sdeirr idserr diserr isderr siderr dsierr sdierr rerdsi errdsi rredsi rredsi errdsi rerdsi redrsi erdrsi rdersi drersi edrrsi derrsi rrdesi rrdesi rdresi drresi rdresi drresi erdrsi redrsi edrrsi derrsi rdersi drersi rersdi errsdi rresdi rresdi errsdi rersdi resrdi ersrdi rserdi srerdi esrrdi serrdi rrsedi rrsedi rsredi srredi rsredi srredi ersrdi resrdi esrrdi serrdi rserdi srerdi redsri erdsri rdesri dresri edrsri dersri resdri ersdri rsedri sredri esrdri serdri rdseri drseri rsderi srderi dsreri sdreri edsrri desrri esdrri sedrri dserri sderri rrdsei rrdsei rdrsei drrsei rdrsei drrsei rrsdei rrsdei rsrdei srrdei rsrdei srrdei rdsrei drsrei rsdrei srdrei dsrrei sdrrei rdsrei drsrei rsdrei srdrei dsrrei sdrrei erdsri redsri edrsri dersri rdesri dresri ersdri resdri esrdri serdri rsedri sredri edsrri desrri esdrri sedrri dserri sderri rdseri drseri rsderi srderi dsreri sdreri rirdse irrdse rridse rridse irrdse rirdse ridrse irdrse rdirse drirse idrrse dirrse rrdise rrdise rdrise drrise rdrise drrise irdrse ridrse idrrse dirrse rdirse drirse rirsde irrsde rrisde rrisde irrsde rirsde risrde irsrde rsirde srirde isrrde sirrde rrside rrside rsride srride rsride srride irsrde risrde isrrde sirrde rsirde srirde ridsre irdsre rdisre drisre idrsre dirsre risdre irsdre rsidre sridre isrdre sirdre rdsire drsire rsdire srdire dsrire sdrire idsrre disrre isdrre sidrre dsirre sdirre rrdsie rrdsie rdrsie drrsie rdrsie drrsie rrsdie rrsdie rsrdie srrdie rsrdie srrdie rdsrie drsrie rsdrie srdrie dsrrie sdrrie rdsrie drsrie rsdrie srdrie dsrrie sdrrie irdsre ridsre idrsre dirsre rdisre drisre irsdre risdre isrdre sirdre rsidre sridre idsrre disrre isdrre sidrre dsirre sdirre rdsire drsire rsdire srdire dsrire sdrire eirdsr ierdsr eridsr reidsr iredsr riedsr eidrsr iedrsr edirsr deirsr idersr diersr erdisr redisr edrisr derisr rdeisr dreisr irdesr ridesr idresr diresr rdiesr driesr eirsdr iersdr erisdr reisdr iresdr riesdr eisrdr iesrdr esirdr seirdr iserdr sierdr ersidr residr esridr seridr rseidr sreidr irsedr risedr isredr siredr rsiedr sriedr eidsrr iedsrr edisrr deisrr idesrr diesrr eisdrr iesdrr esidrr seidrr isedrr siedrr edsirr desirr esdirr sedirr dseirr sdeirr idserr diserr isderr siderr dsierr sdierr erdsir redsir edrsir dersir rdesir dresir ersdir resdir esrdir serdir rsedir sredir edsrir desrir esdrir sedrir dserir sderir rdseir drseir rsdeir srdeir dsreir sdreir irdser ridser idrser dirser rdiser driser irsder risder isrder sirder rsider srider idsrer disrer isdrer sidrer dsirer sdirer rdsier drsier rsdier srdier dsrier sdrier
Note: these 'words' (valid or invalid) are all the permutations of the word reirds. These words are obtained by scrambling the letters in reirds.