lisped ilsped lsiped sliped islped silped lipsed ilpsed lpised plised iplsed pilsed lspied slpied lpsied plsied splied pslied ispled sipled ipsled pisled spiled psiled lisepd ilsepd lsiepd sliepd islepd silepd liespd ilespd leispd elispd ielspd eilspd lseipd sleipd lesipd elsipd selipd eslipd iselpd sielpd ieslpd eislpd seilpd esilpd lipesd ilpesd lpiesd pliesd iplesd pilesd liepsd ilepsd leipsd elipsd ielpsd eilpsd lpeisd pleisd lepisd elpisd pelisd eplisd ipelsd pielsd ieplsd eiplsd peilsd epilsd lspeid slpeid lpseid plseid spleid psleid lsepid slepid lespid elspid selpid eslpid lpesid plesid lepsid elpsid pelsid eplsid spelid pselid seplid esplid peslid epslid ispeld sipeld ipseld piseld spield psield isepld siepld iespld eispld seipld esipld ipesld piesld iepsld eipsld peisld episld speild pseild sepild espild pesild epsild lispde ilspde lsipde slipde islpde silpde lipsde ilpsde lpisde plisde iplsde pilsde lspide slpide lpside plside splide pslide isplde siplde ipslde pislde spilde psilde lisdpe ilsdpe lsidpe slidpe isldpe sildpe lidspe ildspe ldispe dlispe idlspe dilspe lsdipe sldipe ldsipe dlsipe sdlipe dslipe isdlpe sidlpe idslpe dislpe sdilpe dsilpe lipdse ilpdse lpidse plidse ipldse pildse lidpse ildpse ldipse dlipse idlpse dilpse lpdise pldise ldpise dlpise pdlise dplise ipdlse pidlse idplse diplse pdilse dpilse lspdie slpdie lpsdie plsdie spldie psldie lsdpie sldpie ldspie dlspie sdlpie dslpie lpdsie pldsie ldpsie dlpsie pdlsie dplsie spdlie psdlie sdplie dsplie pdslie dpslie ispdle sipdle ipsdle pisdle spidle psidle isdple sidple idsple disple sdiple dsiple ipdsle pidsle idpsle dipsle pdisle dpisle spdile psdile sdpile dspile pdsile dpsile lisedp ilsedp lsiedp sliedp isledp siledp liesdp ilesdp leisdp elisdp ielsdp eilsdp lseidp sleidp lesidp elsidp selidp eslidp iseldp sieldp iesldp eisldp seildp esildp lisdep ilsdep lsidep slidep isldep sildep lidsep ildsep ldisep dlisep idlsep dilsep lsdiep sldiep ldsiep dlsiep sdliep dsliep isdlep sidlep idslep dislep sdilep dsilep liedsp iledsp leidsp elidsp ieldsp eildsp lidesp ildesp ldiesp dliesp idlesp dilesp ledisp eldisp ldeisp dleisp edlisp delisp iedlsp eidlsp idelsp dielsp edilsp deilsp lsedip sledip lesdip elsdip seldip esldip lsdeip sldeip ldseip dlseip sdleip dsleip ledsip eldsip ldesip dlesip edlsip delsip sedlip esdlip sdelip dselip edslip deslip isedlp siedlp iesdlp eisdlp seidlp esidlp isdelp sidelp idselp diselp sdielp dsielp iedslp eidslp ideslp dieslp edislp deislp sedilp esdilp sdeilp dseilp edsilp desilp lipeds ilpeds lpieds plieds ipleds pileds liepds ilepds leipds elipds ielpds eilpds lpeids pleids lepids elpids pelids eplids ipelds pields ieplds eiplds peilds epilds lipdes ilpdes lpides plides ipldes pildes lidpes ildpes ldipes dlipes idlpes dilpes lpdies pldies ldpies dlpies pdlies dplies ipdles pidles idples diples pdiles dpiles liedps iledps leidps elidps ieldps eildps lideps ildeps ldieps dlieps idleps dileps ledips eldips ldeips dleips edlips delips iedlps eidlps idelps dielps edilps deilps lpedis pledis lepdis elpdis peldis epldis lpdeis pldeis ldpeis dlpeis pdleis dpleis ledpis eldpis ldepis dlepis edlpis delpis pedlis epdlis pdelis dpelis edplis deplis ipedls piedls iepdls eipdls peidls epidls ipdels pidels idpels dipels pdiels dpiels iedpls eidpls idepls diepls edipls deipls pedils epdils pdeils dpeils edpils depils lspedi slpedi lpsedi plsedi spledi psledi lsepdi slepdi lespdi elspdi selpdi eslpdi lpesdi plesdi lepsdi elpsdi pelsdi eplsdi speldi pseldi sepldi espldi pesldi epsldi lspdei slpdei lpsdei plsdei spldei psldei lsdpei sldpei ldspei dlspei sdlpei dslpei lpdsei pldsei ldpsei dlpsei pdlsei dplsei spdlei psdlei sdplei dsplei pdslei dpslei lsedpi sledpi lesdpi elsdpi seldpi esldpi lsdepi sldepi ldsepi dlsepi sdlepi dslepi ledspi eldspi ldespi dlespi edlspi delspi sedlpi esdlpi sdelpi dselpi edslpi deslpi lpedsi pledsi lepdsi elpdsi peldsi epldsi lpdesi pldesi ldpesi dlpesi pdlesi dplesi ledpsi eldpsi ldepsi dlepsi edlpsi delpsi pedlsi epdlsi pdelsi dpelsi edplsi deplsi spedli psedli sepdli espdli pesdli epsdli spdeli psdeli sdpeli dspeli pdseli dpseli sedpli esdpli sdepli dsepli edspli despli pedsli epdsli pdesli dpesli edpsli depsli ispedl sipedl ipsedl pisedl spiedl psiedl isepdl siepdl iespdl eispdl seipdl esipdl ipesdl piesdl iepsdl eipsdl peisdl episdl speidl pseidl sepidl espidl pesidl epsidl ispdel sipdel ipsdel pisdel spidel psidel isdpel sidpel idspel dispel sdipel dsipel ipdsel pidsel idpsel dipsel pdisel dpisel spdiel psdiel sdpiel dspiel pdsiel dpsiel isedpl siedpl iesdpl eisdpl seidpl esidpl isdepl sidepl idsepl disepl sdiepl dsiepl iedspl eidspl idespl diespl edispl deispl sedipl esdipl sdeipl dseipl edsipl desipl ipedsl piedsl iepdsl eipdsl peidsl epidsl ipdesl pidesl idpesl dipesl pdiesl dpiesl iedpsl eidpsl idepsl diepsl edipsl deipsl pedisl epdisl pdeisl dpeisl edpisl depisl spedil psedil sepdil espdil pesdil epsdil spdeil psdeil sdpeil dspeil pdseil dpseil sedpil esdpil sdepil dsepil edspil despil pedsil epdsil pdesil dpesil edpsil depsil
Note: these 'words' (valid or invalid) are all the permutations of the word lisped. These words are obtained by scrambling the letters in lisped.