stolid tsolid sotlid ostlid toslid otslid stloid tsloid sltoid lstoid tlsoid ltsoid soltid osltid slotid lsotid olstid lostid tolsid otlsid tlosid ltosid oltsid lotsid stoild tsoild sotild ostild tosild otsild stiold tsiold sitold istold tisold itsold soitld ositld siotld isotld oistld iostld toisld otisld tiosld itosld oitsld iotsld stliod tsliod sltiod lstiod tlsiod ltsiod stilod tsilod sitlod istlod tislod itslod slitod lsitod siltod isltod listod ilstod tlisod ltisod tilsod itlsod litsod iltsod solitd oslitd sloitd lsoitd olsitd lositd soiltd osiltd sioltd isoltd oisltd iosltd sliotd lsiotd silotd islotd lisotd ilsotd olistd loistd oilstd iolstd liostd ilostd tolisd otlisd tloisd ltoisd oltisd lotisd toilsd otilsd tiolsd itolsd oitlsd iotlsd tliosd ltiosd tilosd itlosd litosd iltosd olitsd loitsd oiltsd ioltsd liotsd ilotsd stoldi tsoldi sotldi ostldi tosldi otsldi stlodi tslodi sltodi lstodi tlsodi ltsodi soltdi osltdi slotdi lsotdi olstdi lostdi tolsdi otlsdi tlosdi ltosdi oltsdi lotsdi stodli tsodli sotdli ostdli tosdli otsdli stdoli tsdoli sdtoli dstoli tdsoli dtsoli sodtli osdtli sdotli dsotli odstli dostli todsli otdsli tdosli dtosli odtsli dotsli stldoi tsldoi sltdoi lstdoi tlsdoi ltsdoi stdloi tsdloi sdtloi dstloi tdsloi dtsloi sldtoi lsdtoi sdltoi dsltoi ldstoi dlstoi tldsoi ltdsoi tdlsoi dtlsoi ldtsoi dltsoi soldti osldti slodti lsodti olsdti losdti sodlti osdlti sdolti dsolti odslti doslti sldoti lsdoti sdloti dsloti ldsoti dlsoti oldsti lodsti odlsti dolsti ldosti dlosti toldsi otldsi tlodsi ltodsi oltdsi lotdsi todlsi otdlsi tdolsi dtolsi odtlsi dotlsi tldosi ltdosi tdlosi dtlosi ldtosi dltosi oldtsi lodtsi odltsi doltsi ldotsi dlotsi stoidl tsoidl sotidl ostidl tosidl otsidl stiodl tsiodl sitodl istodl tisodl itsodl soitdl ositdl siotdl isotdl oistdl iostdl toisdl otisdl tiosdl itosdl oitsdl iotsdl stodil tsodil sotdil ostdil tosdil otsdil stdoil tsdoil sdtoil dstoil tdsoil dtsoil sodtil osdtil sdotil dsotil odstil dostil todsil otdsil tdosil dtosil odtsil dotsil stidol tsidol sitdol istdol tisdol itsdol stdiol tsdiol sdtiol dstiol tdsiol dtsiol sidtol isdtol sditol dsitol idstol distol tidsol itdsol tdisol dtisol idtsol ditsol soidtl osidtl siodtl isodtl oisdtl iosdtl soditl osditl sdoitl dsoitl odsitl dositl sidotl isdotl sdiotl dsiotl idsotl disotl oidstl iodstl odistl doistl idostl diostl toidsl otidsl tiodsl itodsl oitdsl iotdsl todisl otdisl tdoisl dtoisl odtisl dotisl tidosl itdosl tdiosl dtiosl idtosl ditosl oidtsl iodtsl oditsl doitsl idotsl diotsl stlido tslido sltido lstido tlsido ltsido stildo tsildo sitldo istldo tisldo itsldo slitdo lsitdo siltdo isltdo listdo ilstdo tlisdo ltisdo tilsdo itlsdo litsdo iltsdo stldio tsldio sltdio lstdio tlsdio ltsdio stdlio tsdlio sdtlio dstlio tdslio dtslio sldtio lsdtio sdltio dsltio ldstio dlstio tldsio ltdsio tdlsio dtlsio ldtsio dltsio stidlo tsidlo sitdlo istdlo tisdlo itsdlo stdilo tsdilo sdtilo dstilo tdsilo dtsilo sidtlo isdtlo sditlo dsitlo idstlo distlo tidslo itdslo tdislo dtislo idtslo ditslo slidto lsidto sildto isldto lisdto ilsdto sldito lsdito sdlito dslito ldsito dlsito sidlto isdlto sdilto dsilto idslto dislto lidsto ildsto ldisto dlisto idlsto dilsto tlidso ltidso tildso itldso litdso iltdso tldiso ltdiso tdliso dtliso ldtiso dltiso tidlso itdlso tdilso dtilso idtlso ditlso lidtso ildtso lditso dlitso idltso diltso solidt oslidt sloidt lsoidt olsidt losidt soildt osildt sioldt isoldt oisldt iosldt sliodt lsiodt silodt islodt lisodt ilsodt olisdt loisdt oilsdt iolsdt liosdt ilosdt soldit osldit slodit lsodit olsdit losdit sodlit osdlit sdolit dsolit odslit doslit sldoit lsdoit sdloit dsloit ldsoit dlsoit oldsit lodsit odlsit dolsit ldosit dlosit soidlt osidlt siodlt isodlt oisdlt iosdlt sodilt osdilt sdoilt dsoilt odsilt dosilt sidolt isdolt sdiolt dsiolt idsolt disolt oidslt iodslt odislt doislt idoslt dioslt slidot lsidot sildot isldot lisdot ilsdot sldiot lsdiot sdliot dsliot ldsiot dlsiot sidlot isdlot sdilot dsilot idslot dislot lidsot ildsot ldisot dlisot idlsot dilsot olidst loidst oildst ioldst liodst ilodst oldist lodist odlist dolist ldoist dloist oidlst iodlst odilst doilst idolst diolst lidost ildost ldiost dliost idlost dilost tolids otlids tloids ltoids oltids lotids toilds otilds tiolds itolds oitlds iotlds tliods ltiods tilods itlods litods iltods olitds loitds oiltds ioltds liotds ilotds toldis otldis tlodis ltodis oltdis lotdis todlis otdlis tdolis dtolis odtlis dotlis tldois ltdois tdlois dtlois ldtois dltois oldtis lodtis odltis doltis ldotis dlotis toidls otidls tiodls itodls oitdls iotdls todils otdils tdoils dtoils odtils dotils tidols itdols tdiols dtiols idtols ditols oidtls iodtls oditls doitls idotls diotls tlidos ltidos tildos itldos litdos iltdos tldios ltdios tdlios dtlios ldtios dltios tidlos itdlos tdilos dtilos idtlos ditlos lidtos ildtos lditos dlitos idltos diltos olidts loidts oildts ioldts liodts ilodts oldits lodits odlits dolits ldoits dloits oidlts iodlts odilts doilts idolts diolts lidots ildots ldiots dliots idlots dilots
Note: these 'words' (valid or invalid) are all the permutations of the word stolid. These words are obtained by scrambling the letters in stolid.