simper ismper smiper msiper imsper misper sipmer ispmer spimer psimer ipsmer pismer smpier mspier spmier psmier mpsier pmsier impser mipser ipmser pimser mpiser pmiser simepr ismepr smiepr msiepr imsepr misepr siempr isempr seimpr esimpr iesmpr eismpr smeipr mseipr semipr esmipr mesipr emsipr imespr miespr iemspr eimspr meispr emispr sipemr ispemr spiemr psiemr ipsemr pisemr siepmr isepmr seipmr esipmr iespmr eispmr speimr pseimr sepimr espimr pesimr epsimr ipesmr piesmr iepsmr eipsmr peismr epismr smpeir mspeir spmeir psmeir mpseir pmseir smepir msepir sempir esmpir mespir emspir spemir psemir sepmir espmir pesmir epsmir mpesir pmesir mepsir empsir pemsir epmsir impesr mipesr ipmesr pimesr mpiesr pmiesr imepsr miepsr iempsr eimpsr meipsr emipsr ipemsr piemsr iepmsr eipmsr peimsr epimsr mpeisr pmeisr mepisr empisr pemisr epmisr simpre ismpre smipre msipre imspre mispre sipmre ispmre spimre psimre ipsmre pismre smpire mspire spmire psmire mpsire pmsire impsre mipsre ipmsre pimsre mpisre pmisre simrpe ismrpe smirpe msirpe imsrpe misrpe sirmpe isrmpe srimpe rsimpe irsmpe rismpe smripe msripe srmipe rsmipe mrsipe rmsipe imrspe mirspe irmspe rimspe mrispe rmispe siprme isprme spirme psirme ipsrme pisrme sirpme isrpme sripme rsipme irspme rispme sprime psrime srpime rspime prsime rpsime iprsme pirsme irpsme ripsme prisme rpisme smprie msprie spmrie psmrie mpsrie pmsrie smrpie msrpie srmpie rsmpie mrspie rmspie sprmie psrmie srpmie rspmie prsmie rpsmie mprsie pmrsie mrpsie rmpsie prmsie rpmsie imprse miprse ipmrse pimrse mpirse pmirse imrpse mirpse irmpse rimpse mripse rmipse iprmse pirmse irpmse ripmse primse rpimse mprise pmrise mrpise rmpise prmise rpmise simerp ismerp smierp msierp imserp miserp siemrp isemrp seimrp esimrp iesmrp eismrp smeirp mseirp semirp esmirp mesirp emsirp imesrp miesrp iemsrp eimsrp meisrp emisrp simrep ismrep smirep msirep imsrep misrep sirmep isrmep srimep rsimep irsmep rismep smriep msriep srmiep rsmiep mrsiep rmsiep imrsep mirsep irmsep rimsep mrisep rmisep siermp isermp seirmp esirmp iesrmp eisrmp siremp isremp sriemp rsiemp irsemp risemp serimp esrimp sreimp rseimp ersimp resimp iersmp eirsmp iresmp riesmp erismp reismp smerip mserip semrip esmrip mesrip emsrip smreip msreip srmeip rsmeip mrseip rmseip sermip esrmip sremip rsemip ersmip resmip mersip emrsip mresip rmesip ermsip remsip imersp miersp iemrsp eimrsp meirsp emirsp imresp miresp irmesp rimesp mriesp rmiesp iermsp eirmsp iremsp riemsp erimsp reimsp merisp emrisp mreisp rmeisp ermisp remisp siperm isperm spierm psierm ipserm piserm sieprm iseprm seiprm esiprm iesprm eisprm speirm pseirm sepirm espirm pesirm epsirm ipesrm piesrm iepsrm eipsrm peisrm episrm siprem isprem spirem psirem ipsrem pisrem sirpem isrpem sripem rsipem irspem rispem spriem psriem srpiem rspiem prsiem rpsiem iprsem pirsem irpsem ripsem prisem rpisem sierpm iserpm seirpm esirpm iesrpm eisrpm sirepm isrepm sriepm rsiepm irsepm risepm seripm esripm sreipm rseipm ersipm resipm ierspm eirspm irespm riespm erispm reispm sperim pserim seprim esprim pesrim epsrim spreim psreim srpeim rspeim prseim rpseim serpim esrpim srepim rsepim erspim respim persim eprsim presim rpesim erpsim repsim ipersm piersm ieprsm eiprsm peirsm epirsm ipresm piresm irpesm ripesm priesm rpiesm ierpsm eirpsm irepsm riepsm eripsm reipsm perism eprism preism rpeism erpism repism smperi msperi spmeri psmeri mpseri pmseri smepri msepri sempri esmpri mespri emspri spemri psemri sepmri espmri pesmri epsmri mpesri pmesri mepsri empsri pemsri epmsri smprei msprei spmrei psmrei mpsrei pmsrei smrpei msrpei srmpei rsmpei mrspei rmspei sprmei psrmei srpmei rspmei prsmei rpsmei mprsei pmrsei mrpsei rmpsei prmsei rpmsei smerpi mserpi semrpi esmrpi mesrpi emsrpi smrepi msrepi srmepi rsmepi mrsepi rmsepi sermpi esrmpi srempi rsempi ersmpi resmpi merspi emrspi mrespi rmespi ermspi remspi spermi psermi seprmi esprmi pesrmi epsrmi spremi psremi srpemi rspemi prsemi rpsemi serpmi esrpmi srepmi rsepmi erspmi respmi persmi eprsmi presmi rpesmi erpsmi repsmi mpersi pmersi meprsi emprsi pemrsi epmrsi mpresi pmresi mrpesi rmpesi prmesi rpmesi merpsi emrpsi mrepsi rmepsi ermpsi rempsi permsi eprmsi premsi rpemsi erpmsi repmsi impers mipers ipmers pimers mpiers pmiers imeprs mieprs iemprs eimprs meiprs emiprs ipemrs piemrs iepmrs eipmrs peimrs epimrs mpeirs pmeirs mepirs empirs pemirs epmirs impres mipres ipmres pimres mpires pmires imrpes mirpes irmpes rimpes mripes rmipes iprmes pirmes irpmes ripmes primes rpimes mpries pmries mrpies rmpies prmies rpmies imerps mierps iemrps eimrps meirps emirps imreps mireps irmeps rimeps mrieps rmieps iermps eirmps iremps riemps erimps reimps merips emrips mreips rmeips ermips remips iperms pierms ieprms eiprms peirms epirms iprems pirems irpems ripems priems rpiems ierpms eirpms irepms riepms eripms reipms perims eprims preims rpeims erpims repims mperis pmeris mepris empris pemris epmris mpreis pmreis mrpeis rmpeis prmeis rpmeis merpis emrpis mrepis rmepis ermpis rempis permis eprmis premis rpemis erpmis repmis
Note: these 'words' (valid or invalid) are all the permutations of the word simper. These words are obtained by scrambling the letters in simper.