sniper nsiper sinper isnper nisper insper snpier nspier spnier psnier npsier pnsier sipner ispner spiner psiner ipsner pisner nipser inpser npiser pniser ipnser pinser sniepr nsiepr sinepr isnepr nisepr insepr sneipr nseipr senipr esnipr nesipr ensipr sienpr isenpr seinpr esinpr iesnpr eisnpr niespr inespr neispr enispr ienspr einspr snpeir nspeir spneir psneir npseir pnseir snepir nsepir senpir esnpir nespir enspir spenir psenir sepnir espnir pesnir epsnir npesir pnesir nepsir enpsir pensir epnsir sipenr ispenr spienr psienr ipsenr pisenr siepnr isepnr seipnr esipnr iespnr eispnr speinr pseinr sepinr espinr pesinr epsinr ipesnr piesnr iepsnr eipsnr peisnr episnr nipesr inpesr npiesr pniesr ipnesr pinesr niepsr inepsr neipsr enipsr ienpsr einpsr npeisr pneisr nepisr enpisr penisr epnisr ipensr piensr iepnsr eipnsr peinsr epinsr snipre nsipre sinpre isnpre nispre inspre snpire nspire spnire psnire npsire pnsire sipnre ispnre spinre psinre ipsnre pisnre nipsre inpsre npisre pnisre ipnsre pinsre snirpe nsirpe sinrpe isnrpe nisrpe insrpe snripe nsripe srnipe rsnipe nrsipe rnsipe sirnpe isrnpe srinpe rsinpe irsnpe risnpe nirspe inrspe nrispe rnispe irnspe rinspe snprie nsprie spnrie psnrie npsrie pnsrie snrpie nsrpie srnpie rsnpie nrspie rnspie sprnie psrnie srpnie rspnie prsnie rpsnie nprsie pnrsie nrpsie rnpsie prnsie rpnsie siprne isprne spirne psirne ipsrne pisrne sirpne isrpne sripne rsipne irspne rispne sprine psrine srpine rspine prsine rpsine iprsne pirsne irpsne ripsne prisne rpisne niprse inprse npirse pnirse ipnrse pinrse nirpse inrpse nripse rnipse irnpse rinpse nprise pnrise nrpise rnpise prnise rpnise iprnse pirnse irpnse ripnse prinse rpinse snierp nsierp sinerp isnerp niserp inserp sneirp nseirp senirp esnirp nesirp ensirp sienrp isenrp seinrp esinrp iesnrp eisnrp niesrp inesrp neisrp enisrp iensrp einsrp snirep nsirep sinrep isnrep nisrep insrep snriep nsriep srniep rsniep nrsiep rnsiep sirnep isrnep srinep rsinep irsnep risnep nirsep inrsep nrisep rnisep irnsep rinsep snerip nserip senrip esnrip nesrip ensrip snreip nsreip srneip rsneip nrseip rnseip sernip esrnip srenip rsenip ersnip resnip nersip enrsip nresip rnesip ernsip rensip siernp isernp seirnp esirnp iesrnp eisrnp sirenp isrenp srienp rsienp irsenp risenp serinp esrinp sreinp rseinp ersinp resinp iersnp eirsnp iresnp riesnp erisnp reisnp niersp inersp neirsp enirsp ienrsp einrsp niresp inresp nriesp rniesp irnesp rinesp nerisp enrisp nreisp rneisp ernisp renisp iernsp eirnsp irensp riensp erinsp reinsp snperi nsperi spneri psneri npseri pnseri snepri nsepri senpri esnpri nespri enspri spenri psenri sepnri espnri pesnri epsnri npesri pnesri nepsri enpsri pensri epnsri snprei nsprei spnrei psnrei npsrei pnsrei snrpei nsrpei srnpei rsnpei nrspei rnspei sprnei psrnei srpnei rspnei prsnei rpsnei nprsei pnrsei nrpsei rnpsei prnsei rpnsei snerpi nserpi senrpi esnrpi nesrpi ensrpi snrepi nsrepi srnepi rsnepi nrsepi rnsepi sernpi esrnpi srenpi rsenpi ersnpi resnpi nerspi enrspi nrespi rnespi ernspi renspi sperni pserni seprni esprni pesrni epsrni spreni psreni srpeni rspeni prseni rpseni serpni esrpni srepni rsepni erspni respni persni eprsni presni rpesni erpsni repsni npersi pnersi neprsi enprsi penrsi epnrsi npresi pnresi nrpesi rnpesi prnesi rpnesi nerpsi enrpsi nrepsi rnepsi ernpsi renpsi pernsi eprnsi prensi rpensi erpnsi repnsi sipern ispern spiern psiern ipsern pisern sieprn iseprn seiprn esiprn iesprn eisprn speirn pseirn sepirn espirn pesirn epsirn ipesrn piesrn iepsrn eipsrn peisrn episrn sipren ispren spiren psiren ipsren pisren sirpen isrpen sripen rsipen irspen rispen sprien psrien srpien rspien prsien rpsien iprsen pirsen irpsen ripsen prisen rpisen sierpn iserpn seirpn esirpn iesrpn eisrpn sirepn isrepn sriepn rsiepn irsepn risepn seripn esripn sreipn rseipn ersipn resipn ierspn eirspn irespn riespn erispn reispn sperin pserin seprin esprin pesrin epsrin sprein psrein srpein rspein prsein rpsein serpin esrpin srepin rsepin erspin respin persin eprsin presin rpesin erpsin repsin ipersn piersn ieprsn eiprsn peirsn epirsn ipresn piresn irpesn ripesn priesn rpiesn ierpsn eirpsn irepsn riepsn eripsn reipsn perisn eprisn preisn rpeisn erpisn repisn nipers inpers npiers pniers ipners piners nieprs ineprs neiprs eniprs ienprs einprs npeirs pneirs nepirs enpirs penirs epnirs ipenrs pienrs iepnrs eipnrs peinrs epinrs nipres inpres npires pnires ipnres pinres nirpes inrpes nripes rnipes irnpes rinpes npries pnries nrpies rnpies prnies rpnies iprnes pirnes irpnes ripnes prines rpines nierps inerps neirps enirps ienrps einrps nireps inreps nrieps rnieps irneps rineps nerips enrips nreips rneips ernips renips iernps eirnps irenps rienps erinps reinps nperis pneris nepris enpris penris epnris npreis pnreis nrpeis rnpeis prneis rpneis nerpis enrpis nrepis rnepis ernpis renpis pernis eprnis prenis rpenis erpnis repnis iperns pierns ieprns eiprns peirns epirns iprens pirens irpens ripens priens rpiens ierpns eirpns irepns riepns eripns reipns perins eprins preins rpeins erpins repins
Note: these 'words' (valid or invalid) are all the permutations of the word sniper. These words are obtained by scrambling the letters in sniper.