speils pseils sepils espils pesils epsils spiels psiels sipels ispels pisels ipsels seipls esipls siepls isepls eispls iespls peisls episls piesls ipesls eipsls iepsls spelis pselis seplis esplis peslis epslis spleis psleis slpeis lspeis plseis lpseis selpis eslpis slepis lsepis elspis lespis pelsis eplsis plesis lpesis elpsis lepsis spiles psiles siples isples pisles ipsles splies pslies slpies lspies plsies lpsies silpes islpes slipes lsipes ilspes lispes pilses iplses plises lpises ilpses lipses seilps esilps sielps iselps eislps ieslps selips eslips sleips lseips elsips lesips sileps isleps slieps lsieps ilseps liseps eilsps ielsps elisps leisps ilesps liesps peilss epilss pielss ipelss eiplss ieplss peliss epliss pleiss lpeiss elpiss lepiss piless ipless pliess lpiess ilpess lipess eilpss ielpss elipss leipss ilepss liepss speisl pseisl sepisl espisl pesisl epsisl spiesl psiesl sipesl ispesl pisesl ipsesl seipsl esipsl siepsl isepsl eispsl iespsl peissl epissl piessl ipessl eipssl iepssl spesil psesil sepsil espsil pessil epssil spseil psseil sspeil sspeil psseil spseil sespil esspil ssepil ssepil esspil sespil pessil epssil psesil spesil espsil sepsil spisel psisel sipsel ispsel pissel ipssel spsiel pssiel sspiel sspiel pssiel spsiel sispel isspel ssipel ssipel isspel sispel pissel ipssel psisel spisel ispsel sipsel seispl esispl siespl isespl eisspl iesspl sesipl essipl sseipl sseipl essipl sesipl sisepl issepl ssiepl ssiepl issepl sisepl eisspl iesspl esispl seispl isespl siespl peissl epissl piessl ipessl eipssl iepssl pesisl epsisl pseisl speisl espisl sepisl pisesl ipsesl psiesl spiesl ispesl sipesl eispsl iespsl esipsl seipsl isepsl siepsl spelsi pselsi seplsi esplsi peslsi epslsi splesi pslesi slpesi lspesi plsesi lpsesi selpsi eslpsi slepsi lsepsi elspsi lespsi pelssi eplssi plessi lpessi elpssi lepssi spesli psesli sepsli espsli pessli epssli spseli psseli sspeli sspeli psseli spseli sespli esspli ssepli ssepli esspli sespli pessli epssli psesli spesli espsli sepsli splsei pslsei slpsei lspsei plssei lpssei spslei psslei ssplei ssplei psslei spslei slspei lsspei sslpei sslpei lsspei slspei plssei lpssei pslsei splsei lspsei slpsei selspi eslspi slespi lsespi elsspi lesspi seslpi esslpi sselpi sselpi esslpi seslpi slsepi lssepi sslepi sslepi lssepi slsepi elsspi lesspi eslspi selspi lsespi slespi pelssi eplssi plessi lpessi elpssi lepssi peslsi epslsi pselsi spelsi esplsi seplsi plsesi lpsesi pslesi splesi lspesi slpesi elspsi lespsi eslpsi selpsi lsepsi slepsi spilse psilse siplse isplse pislse ipslse splise pslise slpise lspise plsise lpsise silpse islpse slipse lsipse ilspse lispse pilsse iplsse plisse lpisse ilpsse lipsse spisle psisle sipsle ispsle pissle ipssle spsile pssile sspile sspile pssile spsile sisple issple ssiple ssiple issple sisple pissle ipssle psisle spisle ispsle sipsle splsie pslsie slpsie lspsie plssie lpssie spslie psslie ssplie ssplie psslie spslie slspie lsspie sslpie sslpie lsspie slspie plssie lpssie pslsie splsie lspsie slpsie silspe islspe slispe lsispe ilsspe lisspe sislpe isslpe ssilpe ssilpe isslpe sislpe slsipe lssipe sslipe sslipe lssipe slsipe ilsspe lisspe islspe silspe lsispe slispe pilsse iplsse plisse lpisse ilpsse lipsse pislse ipslse psilse spilse isplse siplse plsise lpsise pslise splise lspise slpise ilspse lispse islpse silpse lsipse slipse seilsp esilsp sielsp iselsp eislsp ieslsp selisp eslisp sleisp lseisp elsisp lesisp silesp islesp sliesp lsiesp ilsesp lisesp eilssp ielssp elissp leissp ilessp liessp seislp esislp sieslp iseslp eisslp iesslp sesilp essilp sseilp sseilp essilp sesilp siselp isselp ssielp ssielp isselp siselp eisslp iesslp esislp seislp iseslp sieslp selsip eslsip slesip lsesip elssip lessip seslip esslip sselip sselip esslip seslip slseip lsseip ssleip ssleip lsseip slseip elssip lessip eslsip selsip lsesip slesip silsep islsep slisep lsisep ilssep lissep sislep isslep ssilep ssilep isslep sislep slsiep lssiep ssliep ssliep lssiep slsiep ilssep lissep islsep silsep lsisep slisep eilssp ielssp elissp leissp ilessp liessp eislsp ieslsp esilsp seilsp iselsp sielsp elsisp lesisp eslisp selisp lseisp sleisp ilsesp lisesp islesp silesp lsiesp sliesp peilss epilss pielss ipelss eiplss ieplss peliss epliss pleiss lpeiss elpiss lepiss piless ipless pliess lpiess ilpess lipess eilpss ielpss elipss leipss ilepss liepss peisls episls piesls ipesls eipsls iepsls pesils epsils pseils speils espils sepils pisels ipsels psiels spiels ispels sipels eispls iespls esipls seipls isepls siepls pelsis eplsis plesis lpesis elpsis lepsis peslis epslis pselis spelis esplis seplis plseis lpseis psleis spleis lspeis slpeis elspis lespis eslpis selpis lsepis slepis pilses iplses plises lpises ilpses lipses pisles ipsles psiles spiles isples siples plsies lpsies pslies splies lspies slpies ilspes lispes islpes silpes lsipes slipes eilsps ielsps elisps leisps ilesps liesps eislps ieslps esilps seilps iselps sielps elsips lesips eslips selips lseips sleips ilseps liseps isleps sileps lsieps slieps
Note: these 'words' (valid or invalid) are all the permutations of the word speils. These words are obtained by scrambling the letters in speils.