cancer acncer cnacer ncacer anccer naccer cacner accner ccaner ccaner accner cacner cncaer nccaer ccnaer ccnaer nccaer cncaer anccer naccer acncer cancer ncacer cnacer canecr acnecr cnaecr ncaecr ancecr nacecr caencr acencr ceancr ecancr aecncr eacncr cneacr nceacr cenacr ecnacr necacr encacr aneccr naeccr aenccr eanccr neaccr enaccr cacenr accenr ccaenr ccaenr accenr cacenr caecnr acecnr ceacnr ecacnr aeccnr eaccnr cceanr cceanr cecanr eccanr cecanr eccanr acecnr caecnr aeccnr eaccnr ceacnr ecacnr cncear nccear ccnear ccnear nccear cncear cnecar ncecar cencar ecncar neccar enccar ccenar ccenar cecnar eccnar cecnar eccnar ncecar cnecar neccar enccar cencar ecncar ancecr nacecr acnecr canecr ncaecr cnaecr aneccr naeccr aenccr eanccr neaccr enaccr acencr caencr aecncr eacncr ceancr ecancr nceacr cneacr necacr encacr cenacr ecnacr cancre acncre cnacre ncacre anccre naccre cacnre accnre ccanre ccanre accnre cacnre cncare nccare ccnare ccnare nccare cncare anccre naccre acncre cancre ncacre cnacre canrce acnrce cnarce ncarce ancrce nacrce carnce acrnce crance rcance arcnce racnce cnrace ncrace crnace rcnace nrcace rncace anrcce narcce arncce rancce nracce rnacce cacrne accrne ccarne ccarne accrne cacrne carcne acrcne cracne rcacne arccne raccne ccrane ccrane crcane rccane crcane rccane acrcne carcne arccne raccne cracne rcacne cncrae nccrae ccnrae ccnrae nccrae cncrae cnrcae ncrcae crncae rcncae nrccae rnccae ccrnae ccrnae crcnae rccnae crcnae rccnae ncrcae cnrcae nrccae rnccae crncae rcncae ancrce nacrce acnrce canrce ncarce cnarce anrcce narcce arncce rancce nracce rnacce acrnce carnce arcnce racnce crance rcance ncrace cnrace nrcace rncace crnace rcnace canerc acnerc cnaerc ncaerc ancerc nacerc caenrc acenrc ceanrc ecanrc aecnrc eacnrc cnearc ncearc cenarc ecnarc necarc encarc anecrc naecrc aencrc eancrc neacrc enacrc canrec acnrec cnarec ncarec ancrec nacrec carnec acrnec cranec rcanec arcnec racnec cnraec ncraec crnaec rcnaec nrcaec rncaec anrcec narcec arncec rancec nracec rnacec caernc acernc cearnc ecarnc aecrnc eacrnc carenc acrenc craenc rcaenc arcenc racenc ceranc ecranc creanc rceanc ercanc recanc aercnc earcnc arecnc raecnc eracnc reacnc cnerac ncerac cenrac ecnrac necrac encrac cnreac ncreac crneac rcneac nrceac rnceac cernac ecrnac crenac rcenac ercnac recnac nercac enrcac nrecac rnecac erncac rencac anercc naercc aenrcc eanrcc nearcc enarcc anrecc narecc arnecc ranecc nraecc rnaecc aerncc earncc arencc raencc erancc reancc neracc enracc nreacc rneacc ernacc renacc cacern accern ccaern ccaern accern cacern caecrn acecrn ceacrn ecacrn aeccrn eaccrn ccearn ccearn cecarn eccarn cecarn eccarn acecrn caecrn aeccrn eaccrn ceacrn ecacrn cacren accren ccaren ccaren accren cacren carcen acrcen cracen rcacen arccen raccen ccraen ccraen crcaen rccaen crcaen rccaen acrcen carcen arccen raccen cracen rcacen caercn acercn cearcn ecarcn aecrcn eacrcn carecn acrecn craecn rcaecn arcecn racecn ceracn ecracn creacn rceacn ercacn recacn aerccn earccn areccn raeccn eraccn reaccn cceran cceran cecran eccran cecran eccran ccrean ccrean crcean rccean crcean rccean cercan ecrcan crecan rcecan erccan reccan cercan ecrcan crecan rcecan erccan reccan acercn caercn aecrcn eacrcn cearcn ecarcn acrecn carecn arcecn racecn craecn rcaecn aerccn earccn areccn raeccn eraccn reaccn ceracn ecracn creacn rceacn ercacn recacn cncera nccera ccnera ccnera nccera cncera cnecra ncecra cencra ecncra neccra enccra ccenra ccenra cecnra eccnra cecnra eccnra ncecra cnecra neccra enccra cencra ecncra cncrea nccrea ccnrea ccnrea nccrea cncrea cnrcea ncrcea crncea rcncea nrccea rnccea ccrnea ccrnea crcnea rccnea crcnea rccnea ncrcea cnrcea nrccea rnccea crncea rcncea cnerca ncerca cenrca ecnrca necrca encrca cnreca ncreca crneca rcneca nrceca rnceca cernca ecrnca crenca rcenca ercnca recnca nercca enrcca nrecca rnecca erncca rencca ccerna ccerna cecrna eccrna cecrna eccrna ccrena ccrena crcena rccena crcena rccena cercna ecrcna crecna rcecna erccna reccna cercna ecrcna crecna rcecna erccna reccna ncerca cnerca necrca encrca cenrca ecnrca ncreca cnreca nrceca rnceca crneca rcneca nercca enrcca nrecca rnecca erncca rencca cernca ecrnca crenca rcenca ercnca recnca ancerc nacerc acnerc canerc ncaerc cnaerc anecrc naecrc aencrc eancrc neacrc enacrc acenrc caenrc aecnrc eacnrc ceanrc ecanrc ncearc cnearc necarc encarc cenarc ecnarc ancrec nacrec acnrec canrec ncarec cnarec anrcec narcec arncec rancec nracec rnacec acrnec carnec arcnec racnec cranec rcanec ncraec cnraec nrcaec rncaec crnaec rcnaec anercc naercc aenrcc eanrcc nearcc enarcc anrecc narecc arnecc ranecc nraecc rnaecc aerncc earncc arencc raencc erancc reancc neracc enracc nreacc rneacc ernacc renacc acernc caernc aecrnc eacrnc cearnc ecarnc acrenc carenc arcenc racenc craenc rcaenc aercnc earcnc arecnc raecnc eracnc reacnc ceranc ecranc creanc rceanc ercanc recanc ncerac cnerac necrac encrac cenrac ecnrac ncreac cnreac nrceac rnceac crneac rcneac nercac enrcac nrecac rnecac erncac rencac cernac ecrnac crenac rcenac ercnac recnac
Note: these 'words' (valid or invalid) are all the permutations of the word cancer. These words are obtained by scrambling the letters in cancer.