spider psider sipder ispder pisder ipsder spdier psdier sdpier dspier pdsier dpsier sidper isdper sdiper dsiper idsper disper pidser ipdser pdiser dpiser idpser dipser spiedr psiedr sipedr ispedr pisedr ipsedr speidr pseidr sepidr espidr pesidr epsidr siepdr isepdr seipdr esipdr iespdr eispdr piesdr ipesdr peisdr episdr iepsdr eipsdr spdeir psdeir sdpeir dspeir pdseir dpseir spedir psedir sepdir espdir pesdir epsdir sdepir dsepir sedpir esdpir despir edspir pdesir dpesir pedsir epdsir depsir edpsir sidepr isdepr sdiepr dsiepr idsepr disepr siedpr isedpr seidpr esidpr iesdpr eisdpr sdeipr dseipr sedipr esdipr desipr edsipr idespr diespr iedspr eidspr deispr edispr pidesr ipdesr pdiesr dpiesr idpesr dipesr piedsr ipedsr peidsr epidsr iepdsr eipdsr pdeisr dpeisr pedisr epdisr depisr edpisr idepsr diepsr iedpsr eidpsr deipsr edipsr spidre psidre sipdre ispdre pisdre ipsdre spdire psdire sdpire dspire pdsire dpsire sidpre isdpre sdipre dsipre idspre dispre pidsre ipdsre pdisre dpisre idpsre dipsre spirde psirde siprde isprde pisrde ipsrde spride psride srpide rspide prside rpside sirpde isrpde sripde rsipde irspde rispde pirsde iprsde prisde rpisde irpsde ripsde spdrie psdrie sdprie dsprie pdsrie dpsrie sprdie psrdie srpdie rspdie prsdie rpsdie sdrpie dsrpie srdpie rsdpie drspie rdspie pdrsie dprsie prdsie rpdsie drpsie rdpsie sidrpe isdrpe sdirpe dsirpe idsrpe disrpe sirdpe isrdpe sridpe rsidpe irsdpe risdpe sdripe dsripe srdipe rsdipe drsipe rdsipe idrspe dirspe irdspe ridspe drispe rdispe pidrse ipdrse pdirse dpirse idprse diprse pirdse iprdse pridse rpidse irpdse ripdse pdrise dprise prdise rpdise drpise rdpise idrpse dirpse irdpse ridpse dripse rdipse spierd psierd siperd isperd piserd ipserd speird pseird sepird espird pesird epsird sieprd iseprd seiprd esiprd iesprd eisprd piesrd ipesrd peisrd episrd iepsrd eipsrd spired psired sipred ispred pisred ipsred spried psried srpied rspied prsied rpsied sirped isrped sriped rsiped irsped risped pirsed iprsed prised rpised irpsed ripsed sperid pserid seprid esprid pesrid epsrid spreid psreid srpeid rspeid prseid rpseid serpid esrpid srepid rsepid erspid respid persid eprsid presid rpesid erpsid repsid sierpd iserpd seirpd esirpd iesrpd eisrpd sirepd isrepd sriepd rsiepd irsepd risepd seripd esripd sreipd rseipd ersipd resipd ierspd eirspd irespd riespd erispd reispd piersd ipersd peirsd epirsd ieprsd eiprsd piresd ipresd priesd rpiesd irpesd ripesd perisd eprisd preisd rpeisd erpisd repisd ierpsd eirpsd irepsd riepsd eripsd reipsd spderi psderi sdperi dsperi pdseri dpseri spedri psedri sepdri espdri pesdri epsdri sdepri dsepri sedpri esdpri despri edspri pdesri dpesri pedsri epdsri depsri edpsri spdrei psdrei sdprei dsprei pdsrei dpsrei sprdei psrdei srpdei rspdei prsdei rpsdei sdrpei dsrpei srdpei rsdpei drspei rdspei pdrsei dprsei prdsei rpdsei drpsei rdpsei sperdi pserdi seprdi esprdi pesrdi epsrdi spredi psredi srpedi rspedi prsedi rpsedi serpdi esrpdi srepdi rsepdi erspdi respdi persdi eprsdi presdi rpesdi erpsdi repsdi sderpi dserpi sedrpi esdrpi desrpi edsrpi sdrepi dsrepi srdepi rsdepi drsepi rdsepi serdpi esrdpi sredpi rsedpi ersdpi resdpi derspi edrspi drespi rdespi erdspi redspi pdersi dpersi pedrsi epdrsi deprsi edprsi pdresi dpresi prdesi rpdesi drpesi rdpesi perdsi eprdsi predsi rpedsi erpdsi repdsi derpsi edrpsi drepsi rdepsi erdpsi redpsi siderp isderp sdierp dsierp idserp diserp siedrp isedrp seidrp esidrp iesdrp eisdrp sdeirp dseirp sedirp esdirp desirp edsirp idesrp diesrp iedsrp eidsrp deisrp edisrp sidrep isdrep sdirep dsirep idsrep disrep sirdep isrdep sridep rsidep irsdep risdep sdriep dsriep srdiep rsdiep drsiep rdsiep idrsep dirsep irdsep ridsep drisep rdisep sierdp iserdp seirdp esirdp iesrdp eisrdp siredp isredp sriedp rsiedp irsedp risedp seridp esridp sreidp rseidp ersidp residp iersdp eirsdp iresdp riesdp erisdp reisdp sderip dserip sedrip esdrip desrip edsrip sdreip dsreip srdeip rsdeip drseip rdseip serdip esrdip sredip rsedip ersdip resdip dersip edrsip dresip rdesip erdsip redsip idersp diersp iedrsp eidrsp deirsp edirsp idresp diresp irdesp ridesp driesp rdiesp ierdsp eirdsp iredsp riedsp eridsp reidsp derisp edrisp dreisp rdeisp erdisp redisp piders ipders pdiers dpiers idpers dipers piedrs ipedrs peidrs epidrs iepdrs eipdrs pdeirs dpeirs pedirs epdirs depirs edpirs ideprs dieprs iedprs eidprs deiprs ediprs pidres ipdres pdires dpires idpres dipres pirdes iprdes prides rpides irpdes ripdes pdries dpries prdies rpdies drpies rdpies idrpes dirpes irdpes ridpes dripes rdipes pierds iperds peirds epirds ieprds eiprds pireds ipreds prieds rpieds irpeds ripeds perids eprids preids rpeids erpids repids ierpds eirpds irepds riepds eripds reipds pderis dperis pedris epdris depris edpris pdreis dpreis prdeis rpdeis drpeis rdpeis perdis eprdis predis rpedis erpdis repdis derpis edrpis drepis rdepis erdpis redpis iderps dierps iedrps eidrps deirps edirps idreps direps irdeps rideps drieps rdieps ierdps eirdps iredps riedps eridps reidps derips edrips dreips rdeips erdips redips
Note: these 'words' (valid or invalid) are all the permutations of the word spider. These words are obtained by scrambling the letters in spider.