readds eradds raedds aredds eardds aerdds redads erdads rdeads dreads edrads derads radeds ardeds rdaeds draeds adreds dareds eadrds aedrds edards deards aderds daerds readds eradds raedds aredds eardds aerdds redads erdads rdeads dreads edrads derads radeds ardeds rdaeds draeds adreds dareds eadrds aedrds edards deards aderds daerds reddas erddas rdedas dredas edrdas derdas reddas erddas rdedas dredas edrdas derdas rddeas drdeas rddeas drdeas ddreas ddreas eddras dedras eddras dedras dderas dderas raddes arddes rdades drades adrdes dardes raddes arddes rdades drades adrdes dardes rddaes drdaes rddaes drdaes ddraes ddraes addres dadres addres dadres ddares ddares eaddrs aeddrs edadrs deadrs adedrs daedrs eaddrs aeddrs edadrs deadrs adedrs daedrs eddars dedars eddars dedars ddears ddears adders daders adders daders ddaers ddaers readsd eradsd raedsd aredsd eardsd aerdsd redasd erdasd rdeasd dreasd edrasd derasd radesd ardesd rdaesd draesd adresd daresd eadrsd aedrsd edarsd dearsd adersd daersd reasdd erasdd raesdd aresdd earsdd aersdd resadd ersadd rseadd sreadd esradd seradd rasedd arsedd rsaedd sraedd asredd saredd easrdd aesrdd esardd seardd aserdd saerdd redsad erdsad rdesad dresad edrsad dersad resdad ersdad rsedad sredad esrdad serdad rdsead drsead rsdead srdead dsread sdread edsrad desrad esdrad sedrad dserad sderad radsed ardsed rdased drased adrsed darsed rasded arsded rsaded sraded asrded sarded rdsaed drsaed rsdaed srdaed dsraed sdraed adsred dasred asdred sadred dsared sdared eadsrd aedsrd edasrd deasrd adesrd daesrd easdrd aesdrd esadrd seadrd asedrd saedrd edsard desard esdard sedard dseard sdeard adserd daserd asderd saderd dsaerd sdaerd readsd eradsd raedsd aredsd eardsd aerdsd redasd erdasd rdeasd dreasd edrasd derasd radesd ardesd rdaesd draesd adresd daresd eadrsd aedrsd edarsd dearsd adersd daersd reasdd erasdd raesdd aresdd earsdd aersdd resadd ersadd rseadd sreadd esradd seradd rasedd arsedd rsaedd sraedd asredd saredd easrdd aesrdd esardd seardd aserdd saerdd redsad erdsad rdesad dresad edrsad dersad resdad ersdad rsedad sredad esrdad serdad rdsead drsead rsdead srdead dsread sdread edsrad desrad esdrad sedrad dserad sderad radsed ardsed rdased drased adrsed darsed rasded arsded rsaded sraded asrded sarded rdsaed drsaed rsdaed srdaed dsraed sdraed adsred dasred asdred sadred dsared sdared eadsrd aedsrd edasrd deasrd adesrd daesrd easdrd aesdrd esadrd seadrd asedrd saedrd edsard desard esdard sedard dseard sdeard adserd daserd asderd saderd dsaerd sdaerd reddsa erddsa rdedsa dredsa edrdsa derdsa reddsa erddsa rdedsa dredsa edrdsa derdsa rddesa drdesa rddesa drdesa ddresa ddresa eddrsa dedrsa eddrsa dedrsa ddersa ddersa redsda erdsda rdesda dresda edrsda dersda resdda ersdda rsedda sredda esrdda serdda rdseda drseda rsdeda srdeda dsreda sdreda edsrda desrda esdrda sedrda dserda sderda redsda erdsda rdesda dresda edrsda dersda resdda ersdda rsedda sredda esrdda serdda rdseda drseda rsdeda srdeda dsreda sdreda edsrda desrda esdrda sedrda dserda sderda rddsea drdsea rddsea drdsea ddrsea ddrsea rdsdea drsdea rsddea srddea dsrdea sdrdea rdsdea drsdea rsddea srddea dsrdea sdrdea ddsrea ddsrea dsdrea sddrea dsdrea sddrea eddsra dedsra eddsra dedsra ddesra ddesra edsdra desdra esddra seddra dsedra sdedra edsdra desdra esddra seddra dsedra sdedra ddsera ddsera dsdera sddera dsdera sddera raddse arddse rdadse dradse adrdse dardse raddse arddse rdadse dradse adrdse dardse rddase drdase rddase drdase ddrase ddrase addrse dadrse addrse dadrse ddarse ddarse radsde ardsde rdasde drasde adrsde darsde rasdde arsdde rsadde sradde asrdde sardde rdsade drsade rsdade srdade dsrade sdrade adsrde dasrde asdrde sadrde dsarde sdarde radsde ardsde rdasde drasde adrsde darsde rasdde arsdde rsadde sradde asrdde sardde rdsade drsade rsdade srdade dsrade sdrade adsrde dasrde asdrde sadrde dsarde sdarde rddsae drdsae rddsae drdsae ddrsae ddrsae rdsdae drsdae rsddae srddae dsrdae sdrdae rdsdae drsdae rsddae srddae dsrdae sdrdae ddsrae ddsrae dsdrae sddrae dsdrae sddrae addsre dadsre addsre dadsre ddasre ddasre adsdre dasdre asddre saddre dsadre sdadre adsdre dasdre asddre saddre dsadre sdadre ddsare ddsare dsdare sddare dsdare sddare eaddsr aeddsr edadsr deadsr adedsr daedsr eaddsr aeddsr edadsr deadsr adedsr daedsr eddasr dedasr eddasr dedasr ddeasr ddeasr addesr dadesr addesr dadesr ddaesr ddaesr eadsdr aedsdr edasdr deasdr adesdr daesdr easddr aesddr esaddr seaddr aseddr saeddr edsadr desadr esdadr sedadr dseadr sdeadr adsedr dasedr asdedr sadedr dsaedr sdaedr eadsdr aedsdr edasdr deasdr adesdr daesdr easddr aesddr esaddr seaddr aseddr saeddr edsadr desadr esdadr sedadr dseadr sdeadr adsedr dasedr asdedr sadedr dsaedr sdaedr eddsar dedsar eddsar dedsar ddesar ddesar edsdar desdar esddar seddar dsedar sdedar edsdar desdar esddar seddar dsedar sdedar ddsear ddsear dsdear sddear dsdear sddear addser dadser addser dadser ddaser ddaser adsder dasder asdder sadder dsader sdader adsder dasder asdder sadder dsader sdader ddsaer ddsaer dsdaer sddaer dsdaer sddaer
Note: these 'words' (valid or invalid) are all the permutations of the word readds. These words are obtained by scrambling the letters in readds.