frises rfises firses ifrses rifses irfses frsies rfsies fsries sfries rsfies srfies fisres ifsres fsires sfires isfres sifres risfes irsfes rsifes srifes isrfes sirfes friess rfiess firess ifress rifess irfess freiss rfeiss feriss efriss refiss erfiss fierss iferss feirss efirss iefrss eifrss riefss irefss reifss erifss ierfss eirfss frseis rfseis fsreis sfreis rsfeis srfeis fresis rfesis fersis efrsis refsis erfsis fseris sferis fesris efsris sefris esfris rsefis srefis resfis ersfis serfis esrfis fisers ifsers fsiers sfiers isfers sifers fiesrs ifesrs feisrs efisrs iefsrs eifsrs fseirs sfeirs fesirs efsirs sefirs esfirs isefrs siefrs iesfrs eisfrs seifrs esifrs risefs irsefs rsiefs sriefs isrefs sirefs riesfs iresfs reisfs erisfs iersfs eirsfs rseifs sreifs resifs ersifs serifs esrifs iserfs sierfs iesrfs eisrfs seirfs esirfs frisse rfisse firsse ifrsse rifsse irfsse frsise rfsise fsrise sfrise rsfise srfise fisrse ifsrse fsirse sfirse isfrse sifrse risfse irsfse rsifse srifse isrfse sirfse frisse rfisse firsse ifrsse rifsse irfsse frsise rfsise fsrise sfrise rsfise srfise fisrse ifsrse fsirse sfirse isfrse sifrse risfse irsfse rsifse srifse isrfse sirfse frssie rfssie fsrsie sfrsie rsfsie srfsie frssie rfssie fsrsie sfrsie rsfsie srfsie fssrie sfsrie fssrie sfsrie ssfrie ssfrie rssfie srsfie rssfie srsfie ssrfie ssrfie fissre ifssre fsisre sfisre isfsre sifsre fissre ifssre fsisre sfisre isfsre sifsre fssire sfsire fssire sfsire ssfire ssfire issfre sisfre issfre sisfre ssifre ssifre rissfe irssfe rsisfe srisfe isrsfe sirsfe rissfe irssfe rsisfe srisfe isrsfe sirsfe rssife srsife rssife srsife ssrife ssrife issrfe sisrfe issrfe sisrfe ssirfe ssirfe friess rfiess firess ifress rifess irfess freiss rfeiss feriss efriss refiss erfiss fierss iferss feirss efirss iefrss eifrss riefss irefss reifss erifss ierfss eirfss frises rfises firses ifrses rifses irfses frsies rfsies fsries sfries rsfies srfies fisres ifsres fsires sfires isfres sifres risfes irsfes rsifes srifes isrfes sirfes fresis rfesis fersis efrsis refsis erfsis frseis rfseis fsreis sfreis rsfeis srfeis fesris efsris fseris sferis esfris sefris resfis ersfis rsefis srefis esrfis serfis fiesrs ifesrs feisrs efisrs iefsrs eifsrs fisers ifsers fsiers sfiers isfers sifers fesirs efsirs fseirs sfeirs esfirs sefirs iesfrs eisfrs isefrs siefrs esifrs seifrs riesfs iresfs reisfs erisfs iersfs eirsfs risefs irsefs rsiefs sriefs isrefs sirefs resifs ersifs rseifs sreifs esrifs serifs iesrfs eisrfs iserfs sierfs esirfs seirfs frsesi rfsesi fsresi sfresi rsfesi srfesi fressi rfessi ferssi efrssi refssi erfssi fsersi sfersi fesrsi efsrsi sefrsi esfrsi rsefsi srefsi resfsi ersfsi serfsi esrfsi frssei rfssei fsrsei sfrsei rsfsei srfsei frssei rfssei fsrsei sfrsei rsfsei srfsei fssrei sfsrei fssrei sfsrei ssfrei ssfrei rssfei srsfei rssfei srsfei ssrfei ssrfei fressi rfessi ferssi efrssi refssi erfssi frsesi rfsesi fsresi sfresi rsfesi srfesi fesrsi efsrsi fsersi sfersi esfrsi sefrsi resfsi ersfsi rsefsi srefsi esrfsi serfsi fsesri sfesri fessri efssri sefsri esfsri fsseri sfseri fsseri sfseri ssferi ssferi fessri efssri fsesri sfesri esfsri sefsri sesfri essfri ssefri ssefri essfri sesfri rsesfi sresfi ressfi erssfi sersfi esrsfi rssefi srsefi rssefi srsefi ssrefi ssrefi ressfi erssfi rsesfi sresfi esrsfi sersfi sesrfi essrfi sserfi sserfi essrfi sesrfi fisesr ifsesr fsiesr sfiesr isfesr sifesr fiessr ifessr feissr efissr iefssr eifssr fseisr sfeisr fesisr efsisr sefisr esfisr isefsr siefsr iesfsr eisfsr seifsr esifsr fisser ifsser fsiser sfiser isfser sifser fisser ifsser fsiser sfiser isfser sifser fssier sfsier fssier sfsier ssfier ssfier issfer sisfer issfer sisfer ssifer ssifer fiessr ifessr feissr efissr iefssr eifssr fisesr ifsesr fsiesr sfiesr isfesr sifesr fesisr efsisr fseisr sfeisr esfisr sefisr iesfsr eisfsr isefsr siefsr esifsr seifsr fsesir sfesir fessir efssir sefsir esfsir fsseir sfseir fsseir sfseir ssfeir ssfeir fessir efssir fsesir sfesir esfsir sefsir sesfir essfir ssefir ssefir essfir sesfir isesfr siesfr iessfr eissfr seisfr esisfr issefr sisefr issefr sisefr ssiefr ssiefr iessfr eissfr isesfr siesfr esisfr seisfr sesifr essifr sseifr sseifr essifr sesifr risesf irsesf rsiesf sriesf isresf siresf riessf iressf reissf erissf ierssf eirssf rseisf sreisf resisf ersisf serisf esrisf isersf siersf iesrsf eisrsf seirsf esirsf rissef irssef rsisef srisef isrsef sirsef rissef irssef rsisef srisef isrsef sirsef rssief srsief rssief srsief ssrief ssrief issref sisref issref sisref ssiref ssiref riessf iressf reissf erissf ierssf eirssf risesf irsesf rsiesf sriesf isresf siresf resisf ersisf rseisf sreisf esrisf serisf iesrsf eisrsf isersf siersf esirsf seirsf rsesif sresif ressif erssif sersif esrsif rsseif srseif rsseif srseif ssreif ssreif ressif erssif rsesif sresif esrsif sersif sesrif essrif sserif sserif essrif sesrif isesrf siesrf iessrf eissrf seisrf esisrf isserf siserf isserf siserf ssierf ssierf iessrf eissrf isesrf siesrf esisrf seisrf sesirf essirf sseirf sseirf essirf sesirf
Note: these 'words' (valid or invalid) are all the permutations of the word frises. These words are obtained by scrambling the letters in frises.