speaks pseaks sepaks espaks pesaks epsaks spaeks psaeks sapeks aspeks paseks apseks seapks esapks saepks asepks easpks aespks peasks epasks paesks apesks eapsks aepsks spekas psekas sepkas espkas peskas epskas spkeas pskeas skpeas kspeas pkseas kpseas sekpas eskpas skepas ksepas ekspas kespas peksas epksas pkesas kpesas ekpsas kepsas spakes psakes sapkes aspkes paskes apskes spkaes pskaes skpaes kspaes pksaes kpsaes sakpes askpes skapes ksapes akspes kaspes pakses apkses pkases kpases akpses kapses seakps esakps saekps asekps easkps aeskps sekaps eskaps skeaps kseaps eksaps kesaps sakeps askeps skaeps ksaeps akseps kaseps eaksps aeksps ekasps keasps akesps kaesps peakss epakss paekss apekss eapkss aepkss pekass epkass pkeass kpeass ekpass kepass pakess apkess pkaess kpaess akpess kapess eakpss aekpss ekapss keapss akepss kaepss speask pseask sepask espask pesask epsask spaesk psaesk sapesk aspesk pasesk apsesk seapsk esapsk saepsk asepsk easpsk aespsk peassk epassk paessk apessk eapssk aepssk spesak psesak sepsak espsak pessak epssak spseak psseak sspeak sspeak psseak spseak sespak esspak ssepak ssepak esspak sespak pessak epssak psesak spesak espsak sepsak spasek psasek sapsek aspsek passek apssek spsaek pssaek sspaek sspaek pssaek spsaek saspek asspek ssapek ssapek asspek saspek passek apssek psasek spasek aspsek sapsek seaspk esaspk saespk asespk easspk aesspk sesapk essapk sseapk sseapk essapk sesapk sasepk assepk ssaepk ssaepk assepk sasepk easspk aesspk esaspk seaspk asespk saespk peassk epassk paessk apessk eapssk aepssk pesask epsask pseask speask espask sepask pasesk apsesk psaesk spaesk aspesk sapesk easpsk aespsk esapsk seapsk asepsk saepsk speksa pseksa sepksa espksa pesksa epsksa spkesa pskesa skpesa kspesa pksesa kpsesa sekpsa eskpsa skepsa ksepsa ekspsa kespsa pekssa epkssa pkessa kpessa ekpssa kepssa speska pseska sepska espska pesska epsska spseka psseka sspeka sspeka psseka spseka sespka esspka ssepka ssepka esspka sespka pesska epsska pseska speska espska sepska spksea psksea skpsea kspsea pkssea kpssea spskea psskea sspkea sspkea psskea spskea skspea ksspea sskpea sskpea ksspea skspea pkssea kpssea psksea spksea kspsea skpsea sekspa eskspa skespa ksespa eksspa kesspa seskpa esskpa ssekpa ssekpa esskpa seskpa sksepa kssepa sskepa sskepa kssepa sksepa eksspa kesspa eskspa sekspa ksespa skespa pekssa epkssa pkessa kpessa ekpssa kepssa pesksa epsksa pseksa speksa espksa sepksa pksesa kpsesa pskesa spkesa kspesa skpesa ekspsa kespsa eskpsa sekpsa ksepsa skepsa spakse psakse sapkse aspkse paskse apskse spkase pskase skpase kspase pksase kpsase sakpse askpse skapse ksapse akspse kaspse paksse apksse pkasse kpasse akpsse kapsse spaske psaske sapske aspske passke apsske spsake pssake sspake sspake pssake spsake saspke asspke ssapke ssapke asspke saspke passke apsske psaske spaske aspske sapske spksae psksae skpsae kspsae pkssae kpssae spskae psskae sspkae sspkae psskae spskae skspae ksspae sskpae sskpae ksspae skspae pkssae kpssae psksae spksae kspsae skpsae sakspe askspe skaspe ksaspe aksspe kasspe saskpe asskpe ssakpe ssakpe asskpe saskpe sksape kssape sskape sskape kssape sksape aksspe kasspe askspe sakspe ksaspe skaspe paksse apksse pkasse kpasse akpsse kapsse paskse apskse psakse spakse aspkse sapkse pksase kpsase pskase spkase kspase skpase akspse kaspse askpse sakpse ksapse skapse seaksp esaksp saeksp aseksp easksp aesksp sekasp eskasp skeasp kseasp eksasp kesasp sakesp askesp skaesp ksaesp aksesp kasesp eakssp aekssp ekassp keassp akessp kaessp seaskp esaskp saeskp aseskp easskp aesskp sesakp essakp sseakp sseakp essakp sesakp sasekp assekp ssaekp ssaekp assekp sasekp easskp aesskp esaskp seaskp aseskp saeskp seksap esksap skesap ksesap ekssap kessap seskap esskap ssekap ssekap esskap seskap skseap ksseap sskeap sskeap ksseap skseap ekssap kessap esksap seksap ksesap skesap saksep asksep skasep ksasep akssep kassep saskep asskep ssakep ssakep asskep saskep sksaep kssaep sskaep sskaep kssaep sksaep akssep kassep asksep saksep ksasep skasep eakssp aekssp ekassp keassp akessp kaessp easksp aesksp esaksp seaksp aseksp saeksp eksasp kesasp eskasp sekasp kseasp skeasp aksesp kasesp askesp sakesp ksaesp skaesp peakss epakss paekss apekss eapkss aepkss pekass epkass pkeass kpeass ekpass kepass pakess apkess pkaess kpaess akpess kapess eakpss aekpss ekapss keapss akepss kaepss peasks epasks paesks apesks eapsks aepsks pesaks epsaks pseaks speaks espaks sepaks paseks apseks psaeks spaeks aspeks sapeks easpks aespks esapks seapks asepks saepks peksas epksas pkesas kpesas ekpsas kepsas peskas epskas psekas spekas espkas sepkas pkseas kpseas pskeas spkeas kspeas skpeas ekspas kespas eskpas sekpas ksepas skepas pakses apkses pkases kpases akpses kapses paskes apskes psakes spakes aspkes sapkes pksaes kpsaes pskaes spkaes kspaes skpaes akspes kaspes askpes sakpes ksapes skapes eaksps aeksps ekasps keasps akesps kaesps easkps aeskps esakps seakps asekps saekps eksaps kesaps eskaps sekaps kseaps skeaps akseps kaseps askeps sakeps ksaeps skaeps
Note: these 'words' (valid or invalid) are all the permutations of the word speaks. These words are obtained by scrambling the letters in speaks.