proser rposer porser oprser ropser orpser prsoer rpsoer psroer sproer rspoer srpoer posrer opsrer psorer sporer osprer soprer rosper orsper rsoper sroper osrper sorper proesr rpoesr poresr opresr ropesr orpesr preosr rpeosr perosr eprosr reposr erposr poersr opersr peorsr eporsr oeprsr eoprsr roepsr orepsr reopsr eropsr oerpsr eorpsr prseor rpseor psreor spreor rspeor srpeor presor rpesor persor eprsor repsor erpsor pseror speror pesror epsror sepror espror rsepor srepor respor erspor serpor esrpor poserr opserr psoerr spoerr osperr soperr poesrr opesrr peosrr eposrr oepsrr eopsrr pseorr speorr pesorr epsorr seporr esporr oseprr soeprr oesprr eosprr seoprr esoprr rosepr orsepr rsoepr sroepr osrepr sorepr roespr orespr reospr erospr oerspr eorspr rseopr sreopr resopr ersopr seropr esropr oserpr soerpr oesrpr eosrpr seorpr esorpr prosre rposre porsre oprsre ropsre orpsre prsore rpsore psrore sprore rspore srpore posrre opsrre psorre sporre osprre soprre rospre orspre rsopre sropre osrpre sorpre prorse rporse porrse oprrse roprse orprse prrose rprose prrose rprose rrpose rrpose porrse oprrse prorse rporse orprse roprse rorpse orrpse rropse rropse orrpse rorpse prsroe rpsroe psrroe sprroe rsproe srproe prrsoe rprsoe prrsoe rprsoe rrpsoe rrpsoe psrroe sprroe prsroe rpsroe srproe rsproe rsrpoe srrpoe rrspoe rrspoe srrpoe rsrpoe posrre opsrre psorre sporre osprre soprre porsre oprsre prosre rposre orpsre ropsre psrore sprore prsore rpsore srpore rspore osrpre sorpre orspre rospre sropre rsopre rosrpe orsrpe rsorpe srorpe osrrpe sorrpe rorspe orrspe rrospe rrospe orrspe rorspe rsrope srrope rrsope rrsope srrope rsrope osrrpe sorrpe orsrpe rosrpe srorpe rsorpe proers rpoers porers oprers ropers orpers preors rpeors perors eprors repors erpors poerrs operrs peorrs eporrs oeprrs eoprrs roeprs oreprs reoprs eroprs oerprs eorprs prores rpores porres oprres ropres orpres prroes rproes prroes rproes rrpoes rrpoes porres oprres prores rpores orpres ropres rorpes orrpes rropes rropes orrpes rorpes preros rperos perros eprros repros erpros prreos rpreos prreos rpreos rrpeos rrpeos perros eprros preros rperos erpros repros rerpos errpos rrepos rrepos errpos rerpos poerrs operrs peorrs eporrs oeprrs eoprrs porers oprers proers rpoers orpers ropers perors eprors preors rpeors erpors repors oerprs eorprs oreprs roeprs eroprs reoprs roerps orerps reorps erorps oerrps eorrps roreps orreps rroeps rroeps orreps roreps rerops errops rreops rreops errops rerops oerrps eorrps orerps roerps erorps reorps prsero rpsero psrero sprero rspero srpero presro rpesro persro eprsro repsro erpsro pserro sperro pesrro epsrro seprro esprro rsepro srepro respro erspro serpro esrpro prsreo rpsreo psrreo sprreo rspreo srpreo prrseo rprseo prrseo rprseo rrpseo rrpseo psrreo sprreo prsreo rpsreo srpreo rspreo rsrpeo srrpeo rrspeo rrspeo srrpeo rsrpeo prerso rperso perrso eprrso reprso erprso prreso rpreso prreso rpreso rrpeso rrpeso perrso eprrso prerso rperso erprso reprso rerpso errpso rrepso rrepso errpso rerpso pserro sperro pesrro epsrro seprro esprro psrero sprero prsero rpsero srpero rspero persro eprsro presro rpesro erpsro repsro serpro esrpro srepro rsepro erspro respro rserpo srerpo resrpo ersrpo serrpo esrrpo rsrepo srrepo rrsepo rrsepo srrepo rsrepo rerspo errspo rrespo rrespo errspo rerspo serrpo esrrpo srerpo rserpo ersrpo resrpo poserr opserr psoerr spoerr osperr soperr poesrr opesrr peosrr eposrr oepsrr eopsrr pseorr speorr pesorr epsorr seporr esporr oseprr soeprr oesprr eosprr seoprr esoprr posrer opsrer psorer sporer osprer soprer porser oprser proser rposer orpser ropser psroer sproer prsoer rpsoer srpoer rspoer osrper sorper orsper rosper sroper rsoper poersr opersr peorsr eporsr oeprsr eoprsr poresr opresr proesr rpoesr orpesr ropesr perosr eprosr preosr rpeosr erposr reposr oerpsr eorpsr orepsr roepsr eropsr reopsr pseror speror pesror epsror sepror espror psreor spreor prseor rpseor srpeor rspeor persor eprsor presor rpesor erpsor repsor serpor esrpor srepor rsepor erspor respor oserpr soerpr oesrpr eosrpr seorpr esorpr osrepr sorepr orsepr rosepr sroepr rsoepr oerspr eorspr orespr roespr erospr reospr seropr esropr sreopr rseopr ersopr resopr roserp orserp rsoerp sroerp osrerp sorerp roesrp oresrp reosrp erosrp oersrp eorsrp rseorp sreorp resorp ersorp serorp esrorp oserrp soerrp oesrrp eosrrp seorrp esorrp rosrep orsrep rsorep srorep osrrep sorrep rorsep orrsep rrosep rrosep orrsep rorsep rsroep srroep rrsoep rrsoep srroep rsroep osrrep sorrep orsrep rosrep srorep rsorep roersp orersp reorsp erorsp oerrsp eorrsp roresp orresp rroesp rroesp orresp roresp rerosp errosp rreosp rreosp errosp rerosp oerrsp eorrsp orersp roersp erorsp reorsp rserop srerop resrop ersrop serrop esrrop rsreop srreop rrseop rrseop srreop rsreop rersop errsop rresop rresop errsop rersop serrop esrrop srerop rserop ersrop resrop oserrp soerrp oesrrp eosrrp seorrp esorrp osrerp sorerp orserp roserp sroerp rsoerp oersrp eorsrp oresrp roesrp erosrp reosrp serorp esrorp sreorp rseorp ersorp resorp
Note: these 'words' (valid or invalid) are all the permutations of the word proser. These words are obtained by scrambling the letters in proser.