bidder ibdder bdider dbider idbder dibder bidder ibdder bdider dbider idbder dibder bddier dbdier bddier dbdier ddbier ddbier iddber didber iddber didber ddiber ddiber bidedr ibdedr bdiedr dbiedr idbedr dibedr bieddr ibeddr beiddr ebiddr iebddr eibddr bdeidr dbeidr bedidr ebdidr debidr edbidr idebdr diebdr iedbdr eidbdr deibdr edibdr bidedr ibdedr bdiedr dbiedr idbedr dibedr bieddr ibeddr beiddr ebiddr iebddr eibddr bdeidr dbeidr bedidr ebdidr debidr edbidr idebdr diebdr iedbdr eidbdr deibdr edibdr bddeir dbdeir bddeir dbdeir ddbeir ddbeir bdedir dbedir beddir ebddir debdir edbdir bdedir dbedir beddir ebddir debdir edbdir ddebir ddebir dedbir eddbir dedbir eddbir iddebr didebr iddebr didebr ddiebr ddiebr idedbr diedbr ieddbr eiddbr deidbr edidbr idedbr diedbr ieddbr eiddbr deidbr edidbr ddeibr ddeibr dedibr eddibr dedibr eddibr biddre ibddre bdidre dbidre idbdre dibdre biddre ibddre bdidre dbidre idbdre dibdre bddire dbdire bddire dbdire ddbire ddbire iddbre didbre iddbre didbre ddibre ddibre bidrde ibdrde bdirde dbirde idbrde dibrde birdde ibrdde bridde rbidde irbdde ribdde bdride dbride brdide rbdide drbide rdbide idrbde dirbde irdbde ridbde dribde rdibde bidrde ibdrde bdirde dbirde idbrde dibrde birdde ibrdde bridde rbidde irbdde ribdde bdride dbride brdide rbdide drbide rdbide idrbde dirbde irdbde ridbde dribde rdibde bddrie dbdrie bddrie dbdrie ddbrie ddbrie bdrdie dbrdie brddie rbddie drbdie rdbdie bdrdie dbrdie brddie rbddie drbdie rdbdie ddrbie ddrbie drdbie rddbie drdbie rddbie iddrbe didrbe iddrbe didrbe ddirbe ddirbe idrdbe dirdbe irddbe riddbe dridbe rdidbe idrdbe dirdbe irddbe riddbe dridbe rdidbe ddribe ddribe drdibe rddibe drdibe rddibe biderd ibderd bdierd dbierd idberd diberd biedrd ibedrd beidrd ebidrd iebdrd eibdrd bdeird dbeird bedird ebdird debird edbird idebrd diebrd iedbrd eidbrd deibrd edibrd bidred ibdred bdired dbired idbred dibred birded ibrded brided rbided irbded ribded bdried dbried brdied rbdied drbied rdbied idrbed dirbed irdbed ridbed dribed rdibed bierdd iberdd beirdd ebirdd iebrdd eibrdd biredd ibredd briedd rbiedd irbedd ribedd beridd ebridd breidd rbeidd erbidd rebidd ierbdd eirbdd irebdd riebdd eribdd reibdd bderid dberid bedrid ebdrid debrid edbrid bdreid dbreid brdeid rbdeid drbeid rdbeid berdid ebrdid bredid rbedid erbdid rebdid derbid edrbid drebid rdebid erdbid redbid iderbd dierbd iedrbd eidrbd deirbd edirbd idrebd direbd irdebd ridebd driebd rdiebd ierdbd eirdbd iredbd riedbd eridbd reidbd deribd edribd dreibd rdeibd erdibd redibd biderd ibderd bdierd dbierd idberd diberd biedrd ibedrd beidrd ebidrd iebdrd eibdrd bdeird dbeird bedird ebdird debird edbird idebrd diebrd iedbrd eidbrd deibrd edibrd bidred ibdred bdired dbired idbred dibred birded ibrded brided rbided irbded ribded bdried dbried brdied rbdied drbied rdbied idrbed dirbed irdbed ridbed dribed rdibed bierdd iberdd beirdd ebirdd iebrdd eibrdd biredd ibredd briedd rbiedd irbedd ribedd beridd ebridd breidd rbeidd erbidd rebidd ierbdd eirbdd irebdd riebdd eribdd reibdd bderid dberid bedrid ebdrid debrid edbrid bdreid dbreid brdeid rbdeid drbeid rdbeid berdid ebrdid bredid rbedid erbdid rebdid derbid edrbid drebid rdebid erdbid redbid iderbd dierbd iedrbd eidrbd deirbd edirbd idrebd direbd irdebd ridebd driebd rdiebd ierdbd eirdbd iredbd riedbd eridbd reidbd deribd edribd dreibd rdeibd erdibd redibd bdderi dbderi bdderi dbderi ddberi ddberi bdedri dbedri beddri ebddri debdri edbdri bdedri dbedri beddri ebddri debdri edbdri ddebri ddebri dedbri eddbri dedbri eddbri bddrei dbdrei bddrei dbdrei ddbrei ddbrei bdrdei dbrdei brddei rbddei drbdei rdbdei bdrdei dbrdei brddei rbddei drbdei rdbdei ddrbei ddrbei drdbei rddbei drdbei rddbei bderdi dberdi bedrdi ebdrdi debrdi edbrdi bdredi dbredi brdedi rbdedi drbedi rdbedi berddi ebrddi breddi rbeddi erbddi rebddi derbdi edrbdi drebdi rdebdi erdbdi redbdi bderdi dberdi bedrdi ebdrdi debrdi edbrdi bdredi dbredi brdedi rbdedi drbedi rdbedi berddi ebrddi breddi rbeddi erbddi rebddi derbdi edrbdi drebdi rdebdi erdbdi redbdi dderbi dderbi dedrbi eddrbi dedrbi eddrbi ddrebi ddrebi drdebi rddebi drdebi rddebi derdbi edrdbi dredbi rdedbi erddbi reddbi derdbi edrdbi dredbi rdedbi erddbi reddbi idderb diderb idderb diderb ddierb ddierb idedrb diedrb ieddrb eiddrb deidrb edidrb idedrb diedrb ieddrb eiddrb deidrb edidrb ddeirb ddeirb dedirb eddirb dedirb eddirb iddreb didreb iddreb didreb ddireb ddireb idrdeb dirdeb irddeb riddeb drideb rdideb idrdeb dirdeb irddeb riddeb drideb rdideb ddrieb ddrieb drdieb rddieb drdieb rddieb iderdb dierdb iedrdb eidrdb deirdb edirdb idredb diredb irdedb ridedb driedb rdiedb ierddb eirddb ireddb rieddb eriddb reiddb deridb edridb dreidb rdeidb erdidb redidb iderdb dierdb iedrdb eidrdb deirdb edirdb idredb diredb irdedb ridedb driedb rdiedb ierddb eirddb ireddb rieddb eriddb reiddb deridb edridb dreidb rdeidb erdidb redidb dderib dderib dedrib eddrib dedrib eddrib ddreib ddreib drdeib rddeib drdeib rddeib derdib edrdib dredib rdedib erddib reddib derdib edrdib dredib rdedib erddib reddib
Note: these 'words' (valid or invalid) are all the permutations of the word bidder. These words are obtained by scrambling the letters in bidder.