sirees isrees sriees rsiees irsees risees sieres iseres seires esires iesres eisres sreies rseies series esries resies ersies ireses rieses ierses eirses reises erises sirees isrees sriees rsiees irsees risees sieres iseres seires esires iesres eisres sreies rseies series esries resies ersies ireses rieses ierses eirses reises erises sieers iseers seiers esiers iesers eisers sieers iseers seiers esiers iesers eisers seeirs eseirs seeirs eseirs eesirs eesirs ieesrs eiesrs ieesrs eiesrs eeisrs eeisrs sreeis rseeis sereis esreis reseis erseis sreeis rseeis sereis esreis reseis erseis seeris eseris seeris eseris eesris eesris reesis eresis reesis eresis eersis eersis ireess rieess ieress eiress reiess eriess ireess rieess ieress eiress reiess eriess ieerss eierss ieerss eierss eeirss eeirss reeiss ereiss reeiss ereiss eeriss eeriss sirese isrese sriese rsiese irsese risese sierse iserse seirse esirse iesrse eisrse sreise rseise serise esrise resise ersise iresse riesse iersse eirsse reisse erisse sirsee isrsee srisee rsisee irssee rissee sisree issree ssiree ssiree issree sisree srsiee rssiee ssriee ssriee rssiee srsiee irssee rissee isrsee sirsee rsisee srisee siesre isesre seisre esisre iessre eissre sisere issere ssiere ssiere issere sisere sesire essire sseire sseire essire sesire iessre eissre isesre siesre esisre seisre sresie rsesie sersie esrsie ressie erssie srseie rsseie ssreie ssreie rsseie srseie sesrie essrie sserie sserie essrie sesrie ressie erssie rsesie sresie esrsie sersie iresse riesse iersse eirsse reisse erisse irsese risese isrese sirese rsiese sriese iesrse eisrse iserse sierse esirse seirse resise ersise rseise sreise esrise serise sirese isrese sriese rsiese irsese risese sierse iserse seirse esirse iesrse eisrse sreise rseise serise esrise resise ersise iresse riesse iersse eirsse reisse erisse sirsee isrsee srisee rsisee irssee rissee sisree issree ssiree ssiree issree sisree srsiee rssiee ssriee ssriee rssiee srsiee irssee rissee isrsee sirsee rsisee srisee siesre isesre seisre esisre iessre eissre sisere issere ssiere ssiere issere sisere sesire essire sseire sseire essire sesire iessre eissre isesre siesre esisre seisre sresie rsesie sersie esrsie ressie erssie srseie rsseie ssreie ssreie rsseie srseie sesrie essrie sserie sserie essrie sesrie ressie erssie rsesie sresie esrsie sersie iresse riesse iersse eirsse reisse erisse irsese risese isrese sirese rsiese sriese iesrse eisrse iserse sierse esirse seirse resise ersise rseise sreise esrise serise sieesr iseesr seiesr esiesr iesesr eisesr sieesr iseesr seiesr esiesr iesesr eisesr seeisr eseisr seeisr eseisr eesisr eesisr ieessr eiessr ieessr eiessr eeissr eeissr sieser iseser seiser esiser iesser eisser siseer isseer ssieer ssieer isseer siseer sesier essier sseier sseier essier sesier iesser eisser iseser sieser esiser seiser sieser iseser seiser esiser iesser eisser siseer isseer ssieer ssieer isseer siseer sesier essier sseier sseier essier sesier iesser eisser iseser sieser esiser seiser seesir esesir seesir esesir eessir eessir seseir esseir sseeir sseeir esseir seseir seseir esseir sseeir sseeir esseir seseir eessir eessir esesir seesir esesir seesir ieessr eiessr ieessr eiessr eeissr eeissr iesesr eisesr iseesr sieesr esiesr seiesr iesesr eisesr iseesr sieesr esiesr seiesr eesisr eesisr eseisr seeisr eseisr seeisr sreesi rseesi seresi esresi resesi ersesi sreesi rseesi seresi esresi resesi ersesi seersi esersi seersi esersi eesrsi eesrsi reessi eressi reessi eressi eerssi eerssi sresei rsesei sersei esrsei ressei erssei srseei rsseei ssreei ssreei rsseei srseei sesrei essrei sserei sserei essrei sesrei ressei erssei rsesei sresei esrsei sersei sresei rsesei sersei esrsei ressei erssei srseei rsseei ssreei ssreei rsseei srseei sesrei essrei sserei sserei essrei sesrei ressei erssei rsesei sresei esrsei sersei seesri esesri seesri esesri eessri eessri seseri esseri sseeri sseeri esseri seseri seseri esseri sseeri sseeri esseri seseri eessri eessri esesri seesri esesri seesri reessi eressi reessi eressi eerssi eerssi resesi ersesi rseesi sreesi esresi seresi resesi ersesi rseesi sreesi esresi seresi eesrsi eesrsi esersi seersi esersi seersi ireess rieess ieress eiress reiess eriess ireess rieess ieress eiress reiess eriess ieerss eierss ieerss eierss eeirss eeirss reeiss ereiss reeiss ereiss eeriss eeriss ireses rieses ierses eirses reises erises irsees risees isrees sirees rsiees sriees iesres eisres iseres sieres esires seires resies ersies rseies sreies esries series ireses rieses ierses eirses reises erises irsees risees isrees sirees rsiees sriees iesres eisres iseres sieres esires seires resies ersies rseies sreies esries series ieesrs eiesrs ieesrs eiesrs eeisrs eeisrs iesers eisers iseers sieers esiers seiers iesers eisers iseers sieers esiers seiers eesirs eesirs eseirs seeirs eseirs seeirs reesis eresis reesis eresis eersis eersis reseis erseis rseeis sreeis esreis sereis reseis erseis rseeis sreeis esreis sereis eesris eesris eseris seeris eseris seeris
Note: these 'words' (valid or invalid) are all the permutations of the word sirees. These words are obtained by scrambling the letters in sirees.