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