tracer rtacer tarcer atrcer ratcer artcer trcaer rtcaer tcraer ctraer rctaer crtaer tacrer atcrer tcarer ctarer actrer catrer racter arcter rcater crater acrter carter traecr rtaecr tarecr atrecr ratecr artecr treacr rteacr teracr etracr retacr ertacr taercr atercr tearcr etarcr aetrcr eatrcr raetcr aretcr reatcr eratcr aertcr eartcr trcear rtcear tcrear ctrear rctear crtear trecar rtecar tercar etrcar retcar ertcar tcerar cterar tecrar etcrar cetrar ectrar rcetar cretar rectar erctar certar ecrtar tacerr atcerr tcaerr ctaerr acterr caterr taecrr atecrr teacrr etacrr aetcrr eatcrr tcearr ctearr tecarr etcarr cetarr ectarr acetrr caetrr aectrr eactrr ceatrr ecatrr racetr arcetr rcaetr craetr acretr caretr raectr arectr reactr eractr aerctr earctr rceatr creatr recatr ercatr ceratr ecratr acertr caertr aecrtr eacrtr ceartr ecartr tracre rtacre tarcre atrcre ratcre artcre trcare rtcare tcrare ctrare rctare crtare tacrre atcrre tcarre ctarre actrre catrre ractre arctre rcatre cratre acrtre cartre trarce rtarce tarrce atrrce ratrce artrce trrace rtrace trrace rtrace rrtace rrtace tarrce atrrce trarce rtarce artrce ratrce rartce arrtce rratce rratce arrtce rartce trcrae rtcrae tcrrae ctrrae rctrae crtrae trrcae rtrcae trrcae rtrcae rrtcae rrtcae tcrrae ctrrae trcrae rtcrae crtrae rctrae rcrtae crrtae rrctae rrctae crrtae rcrtae tacrre atcrre tcarre ctarre actrre catrre tarcre atrcre tracre rtacre artcre ratcre tcrare ctrare trcare rtcare crtare rctare acrtre cartre arctre ractre cratre rcatre racrte arcrte rcarte crarte acrrte carrte rarcte arrcte rracte rracte arrcte rarcte rcrate crrate rrcate rrcate crrate rcrate acrrte carrte arcrte racrte crarte rcarte traerc rtaerc tarerc atrerc raterc arterc trearc rtearc terarc etrarc retarc ertarc taerrc aterrc tearrc etarrc aetrrc eatrrc raetrc aretrc reatrc eratrc aertrc eartrc trarec rtarec tarrec atrrec ratrec artrec trraec rtraec trraec rtraec rrtaec rrtaec tarrec atrrec trarec rtarec artrec ratrec rartec arrtec rratec rratec arrtec rartec trerac rterac terrac etrrac retrac ertrac trreac rtreac trreac rtreac rrteac rrteac terrac etrrac trerac rterac ertrac retrac rertac errtac rretac rretac errtac rertac taerrc aterrc tearrc etarrc aetrrc eatrrc tarerc atrerc traerc rtaerc arterc raterc terarc etrarc trearc rtearc ertarc retarc aertrc eartrc aretrc raetrc eratrc reatrc raertc arertc reartc erartc aerrtc earrtc raretc arretc rraetc rraetc arretc raretc reratc erratc rreatc rreatc erratc reratc aerrtc earrtc arertc raertc erartc reartc trcera rtcera tcrera ctrera rctera crtera trecra rtecra tercra etrcra retcra ertcra tcerra cterra tecrra etcrra cetrra ectrra rcetra cretra rectra erctra certra ecrtra trcrea rtcrea tcrrea ctrrea rctrea crtrea trrcea rtrcea trrcea rtrcea rrtcea rrtcea tcrrea ctrrea trcrea rtcrea crtrea rctrea rcrtea crrtea rrctea rrctea crrtea rcrtea trerca rterca terrca etrrca retrca ertrca trreca rtreca trreca rtreca rrteca rrteca terrca etrrca trerca rterca ertrca retrca rertca errtca rretca rretca errtca rertca tcerra cterra tecrra etcrra cetrra ectrra tcrera ctrera trcera rtcera crtera rctera tercra etrcra trecra rtecra ertcra retcra certra ecrtra cretra rcetra erctra rectra rcerta crerta recrta ercrta cerrta ecrrta rcreta crreta rrceta rrceta crreta rcreta rercta errcta rrecta rrecta errcta rercta cerrta ecrrta crerta rcerta ercrta recrta tacerr atcerr tcaerr ctaerr acterr caterr taecrr atecrr teacrr etacrr aetcrr eatcrr tcearr ctearr tecarr etcarr cetarr ectarr acetrr caetrr aectrr eactrr ceatrr ecatrr tacrer atcrer tcarer ctarer actrer catrer tarcer atrcer tracer rtacer artcer ratcer tcraer ctraer trcaer rtcaer crtaer rctaer acrter carter arcter racter crater rcater taercr atercr tearcr etarcr aetrcr eatrcr tarecr atrecr traecr rtaecr artecr ratecr teracr etracr treacr rteacr ertacr retacr aertcr eartcr aretcr raetcr eratcr reatcr tcerar cterar tecrar etcrar cetrar ectrar tcrear ctrear trcear rtcear crtear rctear tercar etrcar trecar rtecar ertcar retcar certar ecrtar cretar rcetar erctar rectar acertr caertr aecrtr eacrtr ceartr ecartr acretr caretr arcetr racetr craetr rcaetr aerctr earctr arectr raectr eractr reactr ceratr ecratr creatr rceatr ercatr recatr racert arcert rcaert craert acrert carert raecrt arecrt reacrt eracrt aercrt earcrt rceart creart recart ercart cerart ecrart acerrt caerrt aecrrt eacrrt cearrt ecarrt racret arcret rcaret craret acrret carret rarcet arrcet rracet rracet arrcet rarcet rcraet crraet rrcaet rrcaet crraet rcraet acrret carret arcret racret craret rcaret raerct arerct rearct erarct aerrct earrct rarect arrect rraect rraect arrect rarect reract erract rreact rreact erract reract aerrct earrct arerct raerct erarct rearct rcerat crerat recrat ercrat cerrat ecrrat rcreat crreat rrceat rrceat crreat rcreat rercat errcat rrecat rrecat errcat rercat cerrat ecrrat crerat rcerat ercrat recrat acerrt caerrt aecrrt eacrrt cearrt ecarrt acrert carert arcert racert craert rcaert aercrt earcrt arecrt raecrt eracrt reacrt cerart ecrart creart rceart ercart recart
Note: these 'words' (valid or invalid) are all the permutations of the word tracer. These words are obtained by scrambling the letters in tracer.