contra ocntra cnotra ncotra onctra noctra cotnra octnra ctonra tconra otcnra tocnra cntora nctora ctnora tcnora ntcora tncora ontcra notcra otncra toncra ntocra tnocra conrta ocnrta cnorta ncorta oncrta nocrta cornta ocrnta cronta rconta orcnta rocnta cnrota ncrota crnota rcnota nrcota rncota onrcta norcta orncta roncta nrocta rnocta cotrna octrna ctorna tcorna otcrna tocrna cortna ocrtna crotna rcotna orctna roctna ctrona tcrona crtona rctona trcona rtcona otrcna torcna ortcna rotcna trocna rtocna cntroa nctroa ctnroa tcnroa ntcroa tncroa cnrtoa ncrtoa crntoa rcntoa nrctoa rnctoa ctrnoa tcrnoa crtnoa rctnoa trcnoa rtcnoa ntrcoa tnrcoa nrtcoa rntcoa trncoa rtncoa ontrca notrca otnrca tonrca ntorca tnorca onrtca nortca orntca rontca nrotca rnotca otrnca tornca ortnca rotnca tronca rtonca ntroca tnroca nrtoca rntoca trnoca rtnoca contar ocntar cnotar ncotar onctar noctar cotnar octnar ctonar tconar otcnar tocnar cntoar nctoar ctnoar tcnoar ntcoar tncoar ontcar notcar otncar toncar ntocar tnocar conatr ocnatr cnoatr ncoatr oncatr nocatr coantr ocantr caontr acontr oacntr aocntr cnaotr ncaotr canotr acnotr nacotr ancotr onactr noactr oanctr aonctr naoctr anoctr cotanr octanr ctoanr tcoanr otcanr tocanr coatnr ocatnr caotnr acotnr oactnr aoctnr ctaonr tcaonr catonr actonr taconr atconr otacnr toacnr oatcnr aotcnr taocnr atocnr cntaor nctaor ctnaor tcnaor ntcaor tncaor cnator ncator cantor acntor nactor anctor ctanor tcanor catnor actnor tacnor atcnor ntacor tnacor natcor antcor tancor atncor ontacr notacr otnacr tonacr ntoacr tnoacr onatcr noatcr oantcr aontcr naotcr anotcr otancr toancr oatncr aotncr taoncr atoncr ntaocr tnaocr natocr antocr tanocr atnocr conrat ocnrat cnorat ncorat oncrat nocrat cornat ocrnat cronat rconat orcnat rocnat cnroat ncroat crnoat rcnoat nrcoat rncoat onrcat norcat orncat roncat nrocat rnocat conart ocnart cnoart ncoart oncart nocart coanrt ocanrt caonrt aconrt oacnrt aocnrt cnaort ncaort canort acnort nacort ancort onacrt noacrt oancrt aoncrt naocrt anocrt corant ocrant croant rcoant orcant rocant coarnt ocarnt caornt acornt oacrnt aocrnt craont rcaont caront acront racont arcont oracnt roacnt oarcnt aorcnt raocnt arocnt cnraot ncraot crnaot rcnaot nrcaot rncaot cnarot ncarot canrot acnrot nacrot ancrot cranot rcanot carnot acrnot racnot arcnot nracot rnacot narcot anrcot rancot arncot onract noract ornact ronact nroact rnoact onarct noarct oanrct aonrct naorct anorct oranct roanct oarnct aornct raonct aronct nraoct rnaoct naroct anroct ranoct arnoct cotran octran ctoran tcoran otcran tocran cortan ocrtan crotan rcotan orctan roctan ctroan tcroan crtoan rctoan trcoan rtcoan otrcan torcan ortcan rotcan trocan rtocan cotarn octarn ctoarn tcoarn otcarn tocarn coatrn ocatrn caotrn acotrn oactrn aoctrn ctaorn tcaorn catorn actorn tacorn atcorn otacrn toacrn oatcrn aotcrn taocrn atocrn coratn ocratn croatn rcoatn orcatn rocatn coartn ocartn caortn acortn oacrtn aocrtn craotn rcaotn carotn acrotn racotn arcotn oractn roactn oarctn aorctn raoctn aroctn ctraon tcraon crtaon rctaon trcaon rtcaon ctaron tcaron catron actron tacron atcron craton rcaton carton acrton racton arcton tracon rtacon tarcon atrcon ratcon artcon otracn toracn ortacn rotacn troacn rtoacn otarcn toarcn oatrcn aotrcn taorcn atorcn oratcn roatcn oartcn aortcn raotcn arotcn traocn rtaocn tarocn atrocn ratocn artocn cntrao nctrao ctnrao tcnrao ntcrao tncrao cnrtao ncrtao crntao rcntao nrctao rnctao ctrnao tcrnao crtnao rctnao trcnao rtcnao ntrcao tnrcao nrtcao rntcao trncao rtncao cntaro nctaro ctnaro tcnaro ntcaro tncaro cnatro ncatro cantro acntro nactro anctro ctanro tcanro catnro actnro tacnro atcnro ntacro tnacro natcro antcro tancro atncro cnrato ncrato crnato rcnato nrcato rncato cnarto ncarto canrto acnrto nacrto ancrto cranto rcanto carnto acrnto racnto arcnto nracto rnacto narcto anrcto rancto arncto ctrano tcrano crtano rctano trcano rtcano ctarno tcarno catrno actrno tacrno atcrno cratno rcatno cartno acrtno ractno arctno tracno rtacno tarcno atrcno ratcno artcno ntraco tnraco nrtaco rntaco trnaco rtnaco ntarco tnarco natrco antrco tanrco atnrco nratco rnatco nartco anrtco rantco arntco tranco rtanco tarnco atrnco ratnco artnco ontrac notrac otnrac tonrac ntorac tnorac onrtac nortac orntac rontac nrotac rnotac otrnac tornac ortnac rotnac tronac rtonac ntroac tnroac nrtoac rntoac trnoac rtnoac ontarc notarc otnarc tonarc ntoarc tnoarc onatrc noatrc oantrc aontrc naotrc anotrc otanrc toanrc oatnrc aotnrc taonrc atonrc ntaorc tnaorc natorc antorc tanorc atnorc onratc noratc ornatc ronatc nroatc rnoatc onartc noartc oanrtc aonrtc naortc anortc orantc roantc oarntc aorntc raontc arontc nraotc rnaotc narotc anrotc ranotc arnotc otranc toranc ortanc rotanc troanc rtoanc otarnc toarnc oatrnc aotrnc taornc atornc oratnc roatnc oartnc aortnc raotnc arotnc traonc rtaonc taronc atronc ratonc artonc ntraoc tnraoc nrtaoc rntaoc trnaoc rtnaoc ntaroc tnaroc natroc antroc tanroc atnroc nratoc rnatoc nartoc anrtoc rantoc arntoc tranoc rtanoc tarnoc atrnoc ratnoc artnoc
Note: these 'words' (valid or invalid) are all the permutations of the word contra. These words are obtained by scrambling the letters in contra.