gadder agdder gdader dgader adgder dagder gadder agdder gdader dgader adgder dagder gddaer dgdaer gddaer dgdaer ddgaer ddgaer addger dadger addger dadger ddager ddager gadedr agdedr gdaedr dgaedr adgedr dagedr gaeddr ageddr geaddr egaddr aegddr eagddr gdeadr dgeadr gedadr egdadr degadr edgadr adegdr daegdr aedgdr eadgdr deagdr edagdr gadedr agdedr gdaedr dgaedr adgedr dagedr gaeddr ageddr geaddr egaddr aegddr eagddr gdeadr dgeadr gedadr egdadr degadr edgadr adegdr daegdr aedgdr eadgdr deagdr edagdr gddear dgdear gddear dgdear ddgear ddgear gdedar dgedar geddar egddar degdar edgdar gdedar dgedar geddar egddar degdar edgdar ddegar ddegar dedgar eddgar dedgar eddgar addegr dadegr addegr dadegr ddaegr ddaegr adedgr daedgr aeddgr eaddgr deadgr edadgr adedgr daedgr aeddgr eaddgr deadgr edadgr ddeagr ddeagr dedagr eddagr dedagr eddagr gaddre agddre gdadre dgadre adgdre dagdre gaddre agddre gdadre dgadre adgdre dagdre gddare dgdare gddare dgdare ddgare ddgare addgre dadgre addgre dadgre ddagre ddagre gadrde agdrde gdarde dgarde adgrde dagrde gardde agrdde gradde rgadde argdde ragdde gdrade dgrade grdade rgdade drgade rdgade adrgde dargde ardgde radgde dragde rdagde gadrde agdrde gdarde dgarde adgrde dagrde gardde agrdde gradde rgadde argdde ragdde gdrade dgrade grdade rgdade drgade rdgade adrgde dargde ardgde radgde dragde rdagde gddrae dgdrae gddrae dgdrae ddgrae ddgrae gdrdae dgrdae grddae rgddae drgdae rdgdae gdrdae dgrdae grddae rgddae drgdae rdgdae ddrgae ddrgae drdgae rddgae drdgae rddgae addrge dadrge addrge dadrge ddarge ddarge adrdge dardge arddge raddge dradge rdadge adrdge dardge arddge raddge dradge rdadge ddrage ddrage drdage rddage drdage rddage gaderd agderd gdaerd dgaerd adgerd dagerd gaedrd agedrd geadrd egadrd aegdrd eagdrd gdeard dgeard gedard egdard degard edgard adegrd daegrd aedgrd eadgrd deagrd edagrd gadred agdred gdared dgared adgred dagred garded agrded graded rgaded argded ragded gdraed dgraed grdaed rgdaed drgaed rdgaed adrged darged ardged radged draged rdaged gaerdd agerdd geardd egardd aegrdd eagrdd garedd agredd graedd rgaedd argedd ragedd geradd egradd greadd rgeadd ergadd regadd aergdd eargdd aregdd raegdd eragdd reagdd gderad dgerad gedrad egdrad degrad edgrad gdread dgread grdead rgdead drgead rdgead gerdad egrdad gredad rgedad ergdad regdad dergad edrgad dregad rdegad erdgad redgad adergd daergd aedrgd eadrgd deargd edargd adregd daregd ardegd radegd draegd rdaegd aerdgd eardgd aredgd raedgd eradgd readgd deragd edragd dreagd rdeagd erdagd redagd gaderd agderd gdaerd dgaerd adgerd dagerd gaedrd agedrd geadrd egadrd aegdrd eagdrd gdeard dgeard gedard egdard degard edgard adegrd daegrd aedgrd eadgrd deagrd edagrd gadred agdred gdared dgared adgred dagred garded agrded graded rgaded argded ragded gdraed dgraed grdaed rgdaed drgaed rdgaed adrged darged ardged radged draged rdaged gaerdd agerdd geardd egardd aegrdd eagrdd garedd agredd graedd rgaedd argedd ragedd geradd egradd greadd rgeadd ergadd regadd aergdd eargdd aregdd raegdd eragdd reagdd gderad dgerad gedrad egdrad degrad edgrad gdread dgread grdead rgdead drgead rdgead gerdad egrdad gredad rgedad ergdad regdad dergad edrgad dregad rdegad erdgad redgad adergd daergd aedrgd eadrgd deargd edargd adregd daregd ardegd radegd draegd rdaegd aerdgd eardgd aredgd raedgd eradgd readgd deragd edragd dreagd rdeagd erdagd redagd gddera dgdera gddera dgdera ddgera ddgera gdedra dgedra geddra egddra degdra edgdra gdedra dgedra geddra egddra degdra edgdra ddegra ddegra dedgra eddgra dedgra eddgra gddrea dgdrea gddrea dgdrea ddgrea ddgrea gdrdea dgrdea grddea rgddea drgdea rdgdea gdrdea dgrdea grddea rgddea drgdea rdgdea ddrgea ddrgea drdgea rddgea drdgea rddgea gderda dgerda gedrda egdrda degrda edgrda gdreda dgreda grdeda rgdeda drgeda rdgeda gerdda egrdda gredda rgedda ergdda regdda dergda edrgda dregda rdegda erdgda redgda gderda dgerda gedrda egdrda degrda edgrda gdreda dgreda grdeda rgdeda drgeda rdgeda gerdda egrdda gredda rgedda ergdda regdda dergda edrgda dregda rdegda erdgda redgda dderga dderga dedrga eddrga dedrga eddrga ddrega ddrega drdega rddega drdega rddega derdga edrdga dredga rdedga erddga reddga derdga edrdga dredga rdedga erddga reddga adderg daderg adderg daderg ddaerg ddaerg adedrg daedrg aeddrg eaddrg deadrg edadrg adedrg daedrg aeddrg eaddrg deadrg edadrg ddearg ddearg dedarg eddarg dedarg eddarg addreg dadreg addreg dadreg ddareg ddareg adrdeg dardeg arddeg raddeg dradeg rdadeg adrdeg dardeg arddeg raddeg dradeg rdadeg ddraeg ddraeg drdaeg rddaeg drdaeg rddaeg aderdg daerdg aedrdg eadrdg deardg edardg adredg daredg ardedg radedg draedg rdaedg aerddg earddg areddg raeddg eraddg readdg deradg edradg dreadg rdeadg erdadg redadg aderdg daerdg aedrdg eadrdg deardg edardg adredg daredg ardedg radedg draedg rdaedg aerddg earddg areddg raeddg eraddg readdg deradg edradg dreadg rdeadg erdadg redadg dderag dderag dedrag eddrag dedrag eddrag ddreag ddreag drdeag rddeag drdeag rddeag derdag edrdag dredag rdedag erddag reddag derdag edrdag dredag rdedag erddag reddag
Note: these 'words' (valid or invalid) are all the permutations of the word gadder. These words are obtained by scrambling the letters in gadder.